Prisma Case is a CS2 case with 17 items plus 52 gold entries. It costs $1.16; opening it with the key comes to $3.80. The expected value of the contents is $2.03 — a 53.5% unboxing ROI, or 86.4% when trade-up contracts are factored in.
Takeaway: an opening costs $3.80 and returns $2.03 on average — a 46.5% long-run loss. The median opening returns $0.35: half of all tries return that much or less. The key eats 70% 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 · 7 yr ago
retiredweekly drops · as of 2026-07-02
+4.1%price over 2 weeks
1,184live listings in our DB
$127buy all 17 non-gold skins
Buying the contents outright is cheaper than unboxing: all 17 regular skins cost $127 — the price of 33.5 openings at $3.80 each. The priciest is Five-SeveN | Angry Mob at $52.73, the cheapest is MP7 | Mischief at $0.16.
The case is retired from weekly drops: no new copies enter the game, and existing ones are consumed by openings.
No. An opening costs $3.80 ($1.16 for the case plus $2.64 for the key) while the contents average $2.03 — a 53.5% ROI. The chance a single opening returns more than you spent is 7.2%.
How much does it cost to open Prisma Case?
$3.80: the case itself is $1.16 (cheapest on Skinport) plus the $2.64 key. Keys are sold only by Valve at a fixed price.
What do you usually get from Prisma Case?
The median single opening returns $0.35 — half of all openings return that much or less against a $3.80 cost. The best 10% of openings drop an item worth more than $2.24.
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 53.5% to 86.4%.
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 $1,487.
Where is Prisma Case cheapest?
Right now the low is $1.16 on Skinport; the highest we track is $2.17 — a 87% 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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