Prisma Case is a CS2 case with 17 items plus 52 gold entries. It costs $0.93; opening it with the key comes to $3.77. The expected value of the contents is $1.76 — a 46.8% unboxing ROI, or 58.6% when trade-up contracts are factored in.
Takeaway: an opening costs $3.77 and returns $1.76 on average — a 53.2% long-run loss. The median opening returns $0.28: half of all tries return that much or less. The key eats 75% of your spend. A full breakdown of every case is in the article Best CS2 cases in August 2026.
Where Prisma Case came from
More facts about Prisma Case
March 13, 2019release date · 8 yr ago
retiredweekly drops · as of 2026-07-02
−6.1%price over 2 weeks
11,435live listings in our DB
$114buy all 17 non-gold skins
Buying the contents outright is cheaper than unboxing: all 17 regular skins cost $114 — the price of 30.2 openings at $3.77 each. The priciest is Five-SeveN | Angry Mob at $46.84, the cheapest is MP7 | Mischief at $0.14.
The case is retired from weekly drops: no new copies enter the game, and existing ones are consumed by openings.
No. An opening costs $3.77 ($0.93 for the case plus $2.84 for the key) while the contents average $1.76 — a 46.8% ROI. The chance a single opening returns more than you spent is 5.5%.
How much does it cost to open Prisma Case?
$3.77: the case itself is $0.93 (cheapest on Skinport) plus the $2.84 key. Keys are sold only by Valve at a fixed price.
What do you usually get from Prisma Case?
The median single opening returns $0.28 — half of all openings return that much or less against a $3.77 cost. The best 10% of openings drop an item worth more than $1.70.
What does the "with contracts" column mean?
Some drops are worth more as trade-up contract inputs than sold outright. Counting the better of "sell" vs "feed into a contract", the Prisma Case ROI rises from 46.8% to 58.6%.
What are the knife odds in Prisma Case?
0.26% — roughly one opening in 391. The gold pool has 52 entries picked with equal probability; the wear rolls separately. That many openings cost about $1,472.
Where is Prisma Case cheapest?
Right now the low is $0.93 on Skinport; the highest we track is $2.17 — a 133% spread between markets.
Prices are aggregated from 11 marketplaces into our own database and refresh automatically; USD values are converted from RUB at the current central-bank rate. CS2Price does not sell items — we compare prices and compute profitable trade-up contracts. Not affiliated with Valve.
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