- Cost
- $555.22
- EV
- 52%
- $286.55
- Profit
- −$306.05
- after fee
- Win %
- 10%
- to profit
Avg float ≤ 0.123 (needs < 0.129)4 outcomesSome thin prices
Reverse trade-up finder
Trade up to AK-47 | Fire Serpent
10 Classified skins from the Operation Bravo Case collection can become AK-47 | Fire Serpent. Pick a wear to see every realistic route, its odds, cost and the input float it needs.
Prices as of Oct 27, 2026Steam Community Market averages · snapshot 2026-10-27 10:25 UTC
Minimal Wear AK-47 | Fire Serpent needs an average normalized input float of at least 0.0143 and below 0.1286 (output float 0.070–0.150). Best chance per contract: 10.0%.
- Cost
- $385.96
- EV
- 49%
- $190.25
- Profit
- −$220.52
- after fee
- Win %
- 5%
- to profit
Avg float ≤ 0.114 (needs < 0.129)4 outcomesSome thin prices
Required input float for each AK-47 | Fire Serpent wear
| Wear | Output float | Avg normalized input float | Cheapest route | Best chance |
|---|---|---|---|---|
| Factory New | 0.060–0.070 | < 0.0143 | no priced route | — |
| Minimal Wear | 0.070–0.150 | ≥ 0.0143 and < 0.1286 | $385.96 | 10.0% |
| Field-Tested | 0.150–0.380 | ≥ 0.1286 and < 0.4571 | $175.01 | 15.0% |
| Well-Worn | 0.380–0.450 | ≥ 0.4571 and < 0.5571 | no priced route | — |
| Battle-Scarred | 0.450–0.760 | ≥ 0.5571 and any | $174.98 | 50.0% |
The average is over every input's float normalized to its own range. Output float = 0.06 + average × 0.70.
Other trade-up targets in this collection
How CS2 trade-up contracts work
Inputs & odds
10 skins of one rarity become 1 skin of the next rarity (Mil-Spec → Restricted → Classified → Covert). Since the October 2025 update, 5 Covert skins can become a knife or gloves from those skins' case. Each input collection gets its share of the odds (inputs from it ÷ total), split evenly across that collection's next-tier skins.
Float math
Every input float is normalized to its own skin's range — (float − min) ÷ (max − min) — and averaged. Each output's float is its min + average × (max − min), so a restricted-range skin like 0.10–0.20 can only land in the wears its range allows.
Prices, fees & freshness
Values are Steam Community Market averages from the snapshot dated on each page. Profit subtracts the ~13% Steam seller fee. StatTrak™ inputs give StatTrak™ outputs (knives only — gloves have no StatTrak™). Map collections outside weapon cases aren't in DropLabz's dataset yet.
Pick the skin you want in the reverse trade-up finder, check any contract in the trade-up calculator, or compare with opening cases on case ROI and knife odds.