- Cost
- $169.14
- EV
- 18%
- $30.47
- Profit
- −$142.65
- after fee
- Win %
- 0%
- to profit
Avg float ≤ 0.044 (needs < 0.044)9 outcomesSome thin prices
Reverse trade-up finder
Trade up to Dual Berettas | Marina
10 Mil-Spec Grade skins from the Winter Offensive Weapon Case collection can become Dual Berettas | Marina. 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
Factory New Dual Berettas | Marina needs an average normalized input float below 0.0444 (output float 0.050–0.070). Best chance per contract: 20.0%.
- Cost
- $37.44
- EV
- 61%
- $22.84
- Profit
- −$17.58
- after fee
- Win %
- 5%
- to profit
Avg float ≤ 0.043 (needs < 0.044)8 outcomesSome thin prices
- Cost
- $29.09
- EV
- 42%
- $12.26
- Profit
- −$18.43
- after fee
- Win %
- 3%
- to profit
Avg float ≤ 0.043 (needs < 0.044)9 outcomesSome thin prices
- Cost
- $65.54
- EV
- 73%
- $47.98
- Profit
- −$23.82
- after fee
- Win %
- 18%
- to profit
Avg float ≤ 0.040 (needs < 0.044)9 outcomesSome thin prices
- Cost
- $67.85
- EV
- 15%
- $10.23
- Profit
- −$58.96
- after fee
- Win %
- 0%
- to profit
Avg float ≤ 0.044 (needs < 0.044)9 outcomesSome thin prices
- Cost
- $86.78
- EV
- 82%
- $71.19
- Profit
- −$24.88
- after fee
- Win %
- 23%
- to profit
Avg float ≤ 0.041 (needs < 0.044)8 outcomesSome thin prices
Required input float for each Dual Berettas | Marina wear
| Wear | Output float | Avg normalized input float | Cheapest route | Best chance |
|---|---|---|---|---|
| Factory New | 0.050–0.070 | < 0.0444 | $29.09 | 20.0% |
| Minimal Wear | 0.070–0.150 | ≥ 0.0444 and < 0.2222 | $3.80 | 25.0% |
| Field-Tested | 0.150–0.380 | ≥ 0.2222 and < 0.7333 | $2.37 | 25.0% |
| Well-Worn | 0.380–0.450 | ≥ 0.7333 and < 0.8889 | no priced route | — |
| Battle-Scarred | 0.450–0.500 | ≥ 0.8889 and any | no priced route | — |
The average is over every input's float normalized to its own range. Output float = 0.05 + average × 0.45.
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.