1/2 inch SlingUnsexedCB
$39.99
👍
Typical here $48 -16%Shipping $40Landed $80
Illustration © Mingo Xie / The Silk Ranch
- World Old World
- Habitat Fossorial
- Size Medium
- Temperament Skittish
- Experience Intermediate
- Climate Arid
Monocentropus · Tarantulas
Socotra Island Blue Baboon
Monocentropus balfouri
Monocentropus balfouri — commonly said as mon-oh-SEN-troh-pus bal-FOR-eyeAbout this species
An Old World burrowing tarantula. Medium-sized, skittish and fast, and generally recommended for intermediate keepers. 58 live listings across 29 sellers, with a lowest ask of $40.
Blue-gray legs, tan carapace, and genuine communal tolerance, which is the actual reason to keep this species rather than the color.
Siblings raised together will share an enclosure without the eventual cannibalism that ends most communal attempts, and there are credible reports of prey sharing. That behavior is unusual enough to be the main event.
- World Old World
- Habitat Fossorial
- Size Medium
- Temperament Skittish
- Experience Intermediate
- Climate Arid
All-time low
$35
seen across all crawls, all sizes and sexes
90-day range
$35–$695
low to high
Rarity BETA
Ubiquitous in tracked listings
1/10 · 35 sellers ever
🛒 Add to bundle
01 / Typical here · by life stage and sex
Price by size and sex
The price model's typical for a listing of that size and sex, before shipping, read at the middle of the stage. A listing is graded against the line at its own size. It is fitted across every shop's asks; it is not an ask any shop lists. Real asks are in the listings below.
Typical here at 0.69"
$54
For one unsexed sling, under 1.38", before shipping.
Commonly span
$36–$80
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 0.69"
$110
For one female sling, under 1.38", before shipping.
Commonly span
$73–$167
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 0.69"
$51
For one male sling, under 1.38", before shipping.
Commonly span
$33–$80
The estimated middle 80% of comparable asks; individual shops vary.
No typical price for this combination
Mature males are adults. Pick Adult.
Typical here at 2.06"
$81
For one unsexed juvenile, 1.38 to 2.75", before shipping.
Commonly span
$55–$121
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 2.06"
$166
For one female juvenile, 1.38 to 2.75", before shipping.
Commonly span
$111–$248
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 2.06"
$77
For one male juvenile, 1.38 to 2.75", before shipping.
Commonly span
$50–$120
The estimated middle 80% of comparable asks; individual shops vary.
No typical price for this combination
Mature males are adults. Pick Adult.
Typical here at 3.58"
$100
For one unsexed sub-adult, 2.75 to 4.4", before shipping.
Commonly span
$66–$150
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 3.58"
$204
For one female sub-adult, 2.75 to 4.4", before shipping.
Commonly span
$135–$308
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 3.58"
$95
For one male sub-adult, 2.75 to 4.4", before shipping.
Commonly span
$60–$149
The estimated middle 80% of comparable asks; individual shops vary.
No typical price for this combination
Mature males are adults. Pick Adult.
Typical here at 4.95"
$113
For one unsexed adult, 4.4" and up, before shipping.
Commonly span
$74–$172
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 4.95"
$230
For one female adult, 4.4" and up, before shipping.
Commonly span
$151–$351
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 4.95"
$107
For one male adult, 4.4" and up, before shipping.
Commonly span
$68–$170
The estimated middle 80% of comparable asks; individual shops vary.
Typical here at 4.95"
$92
For one mature male adult, 4.4" and up, before shipping.
Commonly span
$60–$141
The estimated middle 80% of comparable asks; individual shops vary.
Stage
Sex
Price by size
Each dot is one animal's ask, before shipping. The line is the typical price at each size; the band is where we are fairly sure it sits.
5 listings not plotted: with no size stated, or a size far outside this species' range, they have no place on the size axis. The table below lists them.
Log scales. Price over time is further down this page.
02 / Current listings · every shop included
Available now, 58 listings
"Typical here" is this species' price at that listing's size and sex, with the shop's usual premium set aside.
The score out of 10 on a listing is its own rarity score BETA
CB captive-bred ° not stated on this listing
1/2" SlingUnsexedCB°
$39.99
👍
Typical here $48 -16%Shipping calculated at checkoutmin. order $49
0.25-0.5" SlingUnsexedCB°Socotra
$40.00
👍
Typical here $43Shipping calculated at checkout
1.0" SlingUnsexedCB°Socotra
$45.00
💎
Typical here $62 -27%Shipping calculated at checkoutmin. order $50
1/2" SlingUnsexedCB°
$45.99
👍
Typical here $48Shipping calculated at checkoutmin. order $49
0.5-0.75" SlingUnsexedCB°Socotra
$48.00
👍
Typical here $52Shipping calculated at checkout
0.5-0.75" SlingUnsexedCB°Socotra
$49.00
👍
Typical here $52Shipping $49Landed $98
0.5" SlingUnsexedCB°Socotra
$50.00
👍
Typical here $48Shipping calculated at checkout
SlingUnsexedCB°Socotra
$50.00
👍
Typical here $48Shipping $50min. order $100
1/2" SlingUnsexedCB°
$50.00
👍
Typical here $48Shipping calculated at checkout
1.5-2.0" JuvenileUnsexedCBSocotra
$50.00
🔥
Typical here $76 -35%Shipping calculated at checkout
1/2 Inch Sling SlingUnsexedCB°
$54.00
👍
Typical here $48 +13%Shipping calculated at checkout
1.5" JuvenileUnsexedCB°Socotra
$54.00
💎
Typical here $72 -25%Shipping calculated at checkout
1.0" SlingUnsexedCB
$54.99
👍
Typical here $62 -11%Shipping $50Landed $105
0.5" SlingUnsexedCB°
$54.99
👍
Typical here $48 +15%Shipping $50Landed $105
1.5" JuvenileUnsexedCB°
$55.00
💎
Typical here $72 -24%Shipping $49Landed $104
0.75-1.0" SlingUnsexedCB°Socotra
$55.00
👍
Typical here $59Shipping $49Landed $104
0.5-0.75" SlingUnsexedCB°Socotra
$55.00
👍
Typical here $52Shipping calculated at checkout
1.5-2.0" JuvenileUnsexed
$56.00
💎
Typical here $76 -27%Shipping calculated at checkout
2.5" JuvenileUnsexedSocotra
$64.00
💎
Typical here $87 -27%Shipping calculated at checkout
1/2" SlingUnsexedCB°Socotra
$64.99
👎
Typical here $48 +36%Shipping calculated at checkout
0.75" SlingUnsexedCB°Socotra
$65.00
👍
Typical here $56 +17%Shipping calculated at checkout
SlingUnsexedCB°Socotra
$65.00
👎
Typical here $48 +36%Shipping $29Landed $94
No size on this listing that we could readNo sex statedSocotra
$75.00
Not graded
Shipping $50Landed $125
2.75" Sub-adultUnsexedSocotra
$75.00
👍
Typical here $90 -17%Shipping calculated at checkout
JuvenileUnsexedCB°Socotra
$80.00
👍
Typical here $67 +19%Shipping $50min. order $100
No size on this listing that we could read♂Socotra
$85.00
Not graded
Shipping calculated at checkout
2.0-3.0" JuvenileUnsexedSocotra
$85.00
👍
Typical here $87Shipping calculated at checkout
CB unsexed juvenile 1.75"-2.5" JuvenileUnsexedCBSocotra Island Blue Baboon
$130.00
👎
Typical here $82 +58%Shipping calculated at checkout
$149.99
Not graded
Shipping $50Landed $200
3" ♀ Sub-adult♀Socotra
$150.00
💎
Typical here $191 -21%Shipping calculated at checkout
CB unsexed sub-adult 2.75"-4" Sub-adultUnsexedCBSocotra Island Blue Baboon
$170.00
👎
Typical here $98 +74%Shipping calculated at checkout
$175.00
Not graded
Shipping $49Landed $224
$178.00
Not graded
Shipping calculated at checkout
5.0" Adult♀Socotra
$200.00
👍
Typical here $231 -13%Shipping calculated at checkout
Adult Female 5"+ Adult♀
$200.00
👍
Typical here $231 -13%Shipping $60Landed $260
Adult♀
$200.00
👍
Typical here $213Shipping $50Landed $250
$200.00
Not graded
Shipping $50Landed $250
JuvenileUnsexedCB°Juvi
$215.00
👎
Typical here $67 +219%Shipping $50Landed $265
$225.00
Not graded
Shipping calculated at checkout
$225.00
Not graded
Shipping calculated at checkout
3.5"-4" Sub-adult♀CB°
$250.00
👎
Typical here $207 +20%Shipping $60Landed $310
No size on this listing that we could readNo sex statedSocotra
$250.00
Not graded
Shipping calculated at checkout
5.0" Adult♀CBSocotra
$265.00
👍
Typical here $231 +15%Shipping calculated at checkout
5.0" Adult♀
$274.99
👍
Typical here $231 +19%Shipping $50Landed $325
$275.00
Not graded
Shipping $49Landed $324
No size on this listing that we could read♀CB°
$300.00
Not graded
Shipping $60Landed $360
$320.00
Not graded
Shipping $50Landed $370
Adult♀Socotra
$375.00
👎
Typical here $213 +76%Shipping $50Landed $425
No size on this listing that we could read♀Socotra
$450.00
Not graded
Shipping $50Landed $500
$455.00
Not graded
Shipping calculated at checkout
Sub-adult♀Socotra
$475.00
👎
Typical here $178 +166%Shipping calculated at checkout
$475.00
Not graded
Shipping $50Landed $525
Adult♀Socotra
$650.00
👎
Typical here $213 +206%Shipping calculated at checkout
CB 4.75"-5"+ adult female Adult♀CBSocotra Island Blue Baboon
$695.00
👎
Typical here $229 +204%Shipping calculated at checkout
$900.00
Not graded
Shipping $50Landed $950
$1,500.00
Not graded
Shipping calculated at checkout
$1,950.00
Not graded
Shipping calculated at checkout
| Watch or add to bundle | Shop | Form | Size | Sex | Source | Ask | Typical here | Shipping | Landed | Grade | RarityBETA | Buy |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Josh's Frogs | — | 1/2 inch Sling | U | CB | $39.99 | $48 -16% | $40 | $80 | 👍 | 1/10 | Buy | |
| Marshall Arachnids | — | 1/2" Sling | U | CB° | $39.99 | $48 -16% | ❓ | min. $49 | 👍 | 1/10 | Buy | |
| Spider Shoppe | Socotra | 0.25-0.5" Sling | U | CB° | $40.00 | $43 | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Buddha Bugs | Socotra | 1.0" Sling | U | CB° | $45.00 | $62 -27% | ❓ | min. $50 | 💎 | 1/10 | Buy | |
| Marshall Arachnids | — | 1/2" Sling | U | CB° | $45.99 | $48 | ❓ | min. $49 | 👍 | 1/10 | Buy | |
| Spider Shoppe | Socotra | 0.5-0.75" Sling | U | CB° | $48.00 | $52 | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Exotics Unlimited USA | Socotra | 0.5-0.75" Sling | U | CB° | $49.00 | $52 | $49 | $98 | 👍 | 1/10 | Buy | |
| Arachnid Alley | Socotra | 0.5" Sling | U | CB° | $50.00 | $48 | ❓ | ❓ | 👍 | 1/10 | Buy | |
| V Exotic | Socotra | Sling | U | CB° | $50.00 | $48 | $50 | min. $100 | 👍 | 1/10 | Buy | |
| One Love Tarantulas | — | 1/2" Sling | U | CB° | $50.00 | $48 | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Pacific Northwest Arachnids | Socotra | 1.5-2.0" Juvenile | U | CB | $50.00 | $76 -35% | ❓ | ❓ | 🔥 | 1/10 | Buy | |
| Juice's Arthropods | — | 1/2 Inch Sling Sling | U | CB° | $54.00 | $48 +13% | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Spider Shoppe | Socotra | 1.5" Juvenile | U | CB° | $54.00 | $72 -25% | ❓ | ❓ | 💎 | 1/10 | Buy | |
| Big Z's | — | 1.0" Sling | U | CB | $54.99 | $62 -11% | $50 | $105 | 👍 | 1/10 | Buy | |
| Micro Wilderness | — | 0.5" Sling | U | CB° | $54.99 | $48 +15% | $50 | $105 | 👍 | 1/10 | Buy | |
| FangzTV | — | 1.5" Juvenile | U | CB° | $55.00 | $72 -24% | $49 | $104 | 💎 | 1/10 | Buy | |
| Exotics Unlimited USA | Socotra | 0.75-1.0" Sling | U | CB° | $55.00 | $59 | $49 | $104 | 👍 | 1/10 | Buy | |
| Bug Cage Company | Socotra | 0.5-0.75" Sling | U | CB° | $55.00 | $52 | ❓ | ❓ | 👍 | 1/10 | Buy | |
| The Defiant Forest | — | 1.5-2.0" Juvenile | U | ? | $56.00 | $76 -27% | ❓ | ❓ | 💎 | 1/10 | Buy | |
| Spider Shoppe | Socotra | 2.5" Juvenile | U | ? | $64.00 | $87 -27% | ❓ | ❓ | 💎 | 1/10 | Buy | |
| Predator and Prey Exotics | Socotra | 1/2" Sling | U | CB° | $64.99 | $48 +36% | ❓ | ❓ | 👎 | 1/10 | Buy | |
| Westside Tarantulas | Socotra | 0.75" Sling | U | CB° | $65.00 | $56 +17% | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Fear Not Tarantulas | Socotra | Sling | U | CB° | $65.00 | $48 +36% | $29 | $94 | 👎 | 1/10 | Buy | |
| Urban Tarantulas | Socotra | ? | ? | ? | $75.00 | — | $50 | $125 | Not graded | 1/10 | Buy | |
| Underdark Inverts | Socotra | 2.75" Sub-adult | U | ? | $75.00 | $90 -17% | ❓ | ❓ | 👍 | 1/10 | Buy | |
| V Exotic | Socotra | Juvenile | U | CB° | $80.00 | $67 +19% | $50 | min. $100 | 👍 | 1/10 | Buy | |
| Eighth Element | Socotra | ? | ♂ | ? | $85.00 | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| Eighth Element | Socotra | 2.0-3.0" Juvenile | U | ? | $85.00 | $87 | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Tarantula Spiders | Socotra Island Blue Baboon | CB unsexed juvenile 1.75"-2.5" Juvenile | U | CB | $130.00 | $82 +58% | ❓ | ❓ | 👎 | 1/10 | Buy | |
| Paladin Exotics | Socotra | 1.0" Sling | U | CB° | $149.993 ct · $50.00/ea | — | $50 | $200 | Not graded | 1/10 | Buy | |
| Underdark Inverts | Socotra | 3" ♀ Sub-adult | ♀ | ? | $150.00 | $191 -21% | ❓ | ❓ | 💎 | 1/10 | Buy | |
| Tarantula Spiders | Socotra Island Blue Baboon | CB unsexed sub-adult 2.75"-4" Sub-adult | U | CB | $170.00 | $98 +74% | ❓ | ❓ | 👎 | 1/10 | Buy | |
| Jamie's Tarantulas | Socotra | 1.5-2.0" Juvenile | U | ? | $175.003 ct · $58.33/ea | — | $49 | $224 | Not graded | 1/10 | Buy | |
| Spider Shoppe | Socotra | 0.25-0.5" Sling | U | CB° | $178.005 ct · $35.60/ea | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| Arachnid Alley | Socotra | 5.0" Adult | ♀ | ? | $200.00 | $231 -13% | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Plumb's Exotics | — | Adult Female 5"+ Adult | ♀ | ? | $200.00 | $231 -13% | $60 | $260 | 👍 | 1/10 | Buy | |
| Shane's Spiders | — | Adult | ♀ | ? | $200.00 | $213 | $50 | $250 | 👍 | 1/10 | Buy | |
| V Exotic | Socotra | ? | ? | ? | $200.005 ct · $40.00/ea | — | $50 | $250 | Not graded | 1/10 | Buy | |
| Shane's Spiders | Juvi | Juvenile | U | CB° | $215.00 | $67 +219% | $50 | $265 | 👎 | 1/10 | Buy | |
| Buddha Bugs | Socotra | 1.0" Sling | U | CB° | $225.005 ct · $45.00/ea | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| Wonderland Exotics | Socotra | 1.0" Sling | U | CB° | $225.005 ct · $45.00/ea | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| The Spider Room | — | 3.5"-4" Sub-adult | ♀ | CB° | $250.00 | $207 +20% | $60 | $310 | 👎 | 1/10 | Buy | |
| Grimoire Exotics | Socotra | ? | ? | ? | $250.00 | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| Pacific Northwest Arachnids | Socotra | 5.0" Adult | ♀ | CB | $265.00 | $231 +15% | ❓ | ❓ | 👍 | 1/10 | Buy | |
| Micro Wilderness | — | 5.0" Adult | ♀ | ? | $274.99 | $231 +19% | $50 | $325 | 👍 | 1/10 | Buy | |
| Jamie's Tarantulas | Socotra | 1.5-2.0" Juvenile | U | ? | $275.005 ct · $55.00/ea | — | $49 | $324 | Not graded | 1/10 | Buy | |
| The Spider Room | — | ? | ♀ | CB° | $300.00 | — | $60 | $360 | Not graded | 1/10 | Buy | |
| V Exotic | Socotra | ? | ? | ? | $320.005 ct · $64.00/ea | — | $50 | $370 | Not graded | 1/10 | Buy | |
| Urban Tarantulas | Socotra | ? Adult | ♀ | ? | $375.00 | $213 +76% | $50 | $425 | 👎 | 1/10 | Buy | |
| Urban Tarantulas | Socotra | ? | ♀ | ? | $450.00 | — | $50 | $500 | Not graded | 1/10 | Buy | |
| Westside Tarantulas | Socotra | 0.75"+ Sling | U | CB° | $455.007 ct · $65.00/ea | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| Westside Tarantulas | Socotra | Sub-adult | ♀ | ? | $475.00 | $178 +166% | ❓ | ❓ | 👎 | 1/10 | Buy | |
| Urban Tarantulas | Socotra | ? | ? | ? | $475.006 ct · $79.17/ea | — | $50 | $525 | Not graded | 1/10 | Buy | |
| Westside Tarantulas | Socotra | Adult | ♀ | ? | $650.00 | $213 +206% | ❓ | ❓ | 👎 | 1/10 | Buy | |
| Tarantula Spiders | Socotra Island Blue Baboon | CB 4.75"-5"+ adult female Adult | ♀ | CB | $695.00 | $229 +204% | ❓ | ❓ | 👎 | 1/10 | Buy | |
| Urban Tarantulas | Socotra | ? | ? | ? | $900.0013 ct · $69.23/ea | — | $50 | $950 | Not graded | 1/10 | Buy | |
| Westside Tarantulas | Socotra | 3.5"+ Sub-adult | ♀ | ? | $1,500.003 ct · $500.00/ea | — | ❓ | ❓ | Not graded | 1/10 | Buy | |
| Westside Tarantulas | Socotra | 3.5"+ Sub-adult | ♀ | ? | $1,950.005 ct · $390.00/ea | — | ❓ | ❓ | Not graded | 1/10 | Buy |
🔥 the lowest asking price per animal, before shipping, ever recorded for that species, sex and life stage 💎 20–40% below its Typical here 👍 from 20% below to 20% above its Typical here 👎 more than 20% above its Typical here
Any column header sorts the table. Shipping is what the seller charges to ship one animal, read off their own posted policy; ❓ means they calculate it at checkout. Landed is the ask plus shipping, before tax, for a single animal. Graded against wild-caught prices when the listing's title says wild-caught; otherwise source has no effect on the grade.
Shipping is what the seller charges to ship one animal, read off their own posted policy. Landed is the ask plus shipping, before tax, for a single animal. Graded against wild-caught prices when the listing's title says wild-caught; otherwise source has no effect on the grade.
03 / How the number works
How these numbers are worked out — typical advertised price, deal grades, and what they do not mean
Typical advertised price is an ask a shop actually lists — never a modeled figure; it is shown to the nearest dollar. It is named when three or more shops ask within a dollar of each other for one unsexed animal, and that agreed price is shown. For tarantulas it is read from unsexed slings, and when the slings' shops do not agree the middle shop's ask is shown. For every other group, when the shops do not agree the box shows the range of current asks instead and names no typical, and one shop asking is named as one shop. Each shop counts once, whatever its shelf holds.
Typical here is the price model's typical for a listing's own size and sex — fitted every night across every shop's asks, with each shop's own level and slope kept out of the published line, so a shop that prices high on adults does not move what "typical" means. "Commonly span" is the middle 80% of comparable asks the same model expects.
A deal grade compares a listing with Typical here. Never with the species as a whole: a 1" unsexed sling and a 5" confirmed female sit on different parts of the same curve. A listing with no stated size, a species with one shop, a pack, or a cell the model withholds is Not graded, with the reason shown — never marked down for lack of data.
The badges:
- 🔥 the lowest asking price per animal, before shipping, ever recorded for that species, sex and life stage — in stock now, at or below its Typical here, and only where at least two sellers have listed it. It replaces the grade.
- 💎💎 at least 40% below its Typical here.
- 💎 20–40% below.
- 👍 from 20% below to 20% above it.
- 👎 more than 20% above.
Those thresholds are deliberately wide, and the same in both directions: the same animal at the same size is commonly listed at about 2× the price by one seller as by another, so a small gap from the middle says little on its own.
What these numbers are not. FangTrack sees asks, never sales — nothing here is a record of what anything sold for. Every shop we track is included; the model carries each shop's own level so none has to be left out. Private collection uploads never affect any public number. Grades and 🔥 use the ask alone, before shipping; the Landed figure is the ask plus the flat shipping rate on our sheet for that seller (read from the shop's own policy where it posts one), not a checkout total.
A grade is information, not advice. Condition, provenance and how well a seller packs a live animal matter more than a few dollars, and none of them are in the price. More on how this is calculated →
04 / Price over time · asking prices; a time trend appears as daily crawls accumulate
Price over time
Each dot = one listing of one animal:
Female
Male
Unsexed
all-time low typical advertised price
lowest ask now
(drag across the chart to read any day)
05 / What sellers are calling it
Read from each seller's own listing title, and shown per animal so a 10-pack and a 100-pack compare. These are asks currently listed, not a typical advertised price — the figures above cover the species as a whole.
Socotra
40 listings
$36–$650
Socotra Island Blue Baboon
3 listings
$130–$695
Juvi
1 listing
$215
06 / Also in Tarantulas
More to compare, priced.
07 / Illustration · The Silk Ranch