Cobalt Master
A case on CSGOBig, first seen 3 Nov 2026. Every value is CSGOBig's own item price converted from csgobig coin at the rate on the site page.
Price
$5.00
5 CSGOBIG_COIN
Advertised RTP
90.00%
EV $4.50 from 15 items
Observed RTP, 30d
67.19%
80 openings, odds method
Variance
9.6×
of price², per opening
Tail share
1 in 21
of openings carry half the EV
Below price
94.2%
of openings return less than the price
Advertised vs observedper window, 95% band and the advertised marker
observed, 95% bandadvertisedoutside bandsmall sample
Small sample. 80 openings and 3.8 expected rare hits: below the 100 openings and 5 hits the test needs, so no verdict.
Windowsthe test per window
Enough sample: 100 openings and 5 expected rare hits (odds method) or 1,000 openings (sample method).
Items, odds and values15 items · odds sum to 1 · observed counts over 80 openings, 30 days
Share of the expected value, most valuable first; colour is the item's rarity.
Values are CSGOBig's own item prices; EV share = odds × value ÷ EV. Hot / cold compares observed drops of each item with odds × openings; small expected counts are left blank. Odds read from
csgobig:api/cases/getDetails?id=129, 11 Nov, 06:29 UTC.Biggest dropsfrom this case, by value
No drops yetNo drop from this case seen yet.
Latest dropsnewest first
Dual Berettas | Cobalt Quartz (Factory New)weapon · restricted$5.005 CSGOBIG_COIN$0.520.52 CSGOBIG_COIN0.10x
StatTrak™ MAG-7 | Cobalt Core (Minimal Wear)StatTrak · weapon · milspec$5.005 CSGOBIG_COIN$1.381.38 CSGOBIG_COIN0.28x
PP-Bizon | Cobalt Halftone (Minimal Wear)weapon · mil specKING$5.005 CSGOBIG_COIN$0.980.98 CSGOBIG_COIN0.20x
StatTrak™ MAG-7 | Cobalt Core (Well-Worn)StatTrak · weapon · milspec$5.005 CSGOBIG_COIN$0.430.43 CSGOBIG_COIN0.09x
StatTrak™ MAG-7 | Cobalt Core (Minimal Wear)StatTrak · weapon · milspec$5.005 CSGOBIG_COIN$1.381.38 CSGOBIG_COIN0.28x
StatTrak™ MAG-7 | Cobalt Core (Field-Tested)StatTrak · weapon · milspec$5.005 CSGOBIG_COIN$0.380.38 CSGOBIG_COIN0.08x
Observed RTP over timedaily, 30 days
Observed RTP, dailyAdvertised 90.00%
Catalog changesprice, advertised RTP and contents, per capture
| Captured | Price | Advertised | Items |
|---|---|---|---|
| 3 Nov, 04:27 UTC | $5.00 | 90.00% | 15 |
Each opening is tested against the capture in force when it happened; a price or odds change starts a new one.
listed1 13.2%classified 5.8%#4B69FF 1.9%milspec 42.4%mil spec 22.6%restricted 11.3%Mil Spec Grade 2.8%best hit —