How ROI is calculated

ROI vs. profit chance

ROI and profit chance answer different questions. ROI is the probability-weighted, long-run return across every possible drop. Profit chance is the combined probability of receiving an item currently worth more than the case and key together. A case can therefore have a relatively strong ROI but a low profit chance when a very small number of expensive outcomes contribute a large share of its expected value. Compare both numbers rather than treating either one as a promise of profit.

How to use the CS2 ROI calculator

1. Step 1Choose a price provider.Use Best available for the lowest available marketplace prices, or select the provider that matches where you expect to buy and value items.
2. Step 2Compare the core metrics.Sort cases by ROI, then compare total cost, average unbox value, and profit chance instead of looking at the highest possible drop alone.
3. Step 3Inspect the item breakdown.Open any case above to review item-level odds, wear probabilities, prices, and the outcomes driving its expected return.

You can also browse the complete CS2 case catalog or compare a more controlled set of possible outcomes with the CS2 trade-up calculator.

Why Skinbase?

Skinbase keeps case comparisons transparent: you can see the costs, probabilities, prices, and assumptions behind the result instead of relying on one unexplained percentage.

• Live prices from many providersSkinbase tracks live marketplace prices across many providers. Choose a specific provider or Best available so container and outcome values reflect the market data most relevant to you.
• Detailed outcome modelingItem rarity, wear probabilities, StatTrak variants, and priced rare phases are included rather than compressed into a simple rarity average.
• Metrics that answer different questionsCompare total cost, expected value, ROI, and profit chance together, then inspect the item-level breakdown behind each case.