- Cost
- $3.90
- EV
- 51%
- $1.98
- Profit
- −$2.18
- after fee
- Win %
- 0%
- to profit
Avg float ≤ 0.8184 outcomesActive market
Reverse trade-up finder
Trade up to UMP-45 | Grand Prix
10 Mil-Spec Grade skins from the Chroma 2 Case collection can become UMP-45 | Grand Prix. 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
Field-Tested UMP-45 | Grand Prix needs an average normalized input float of anything (output float 0.250–0.350). Best chance per contract: 25.0%.
- Cost
- $1.11
- EV
- 63%
- $0.70
- Profit
- −$0.50
- after fee
- Win %
- 10%
- to profit
Avg float ≤ 0.6019 outcomesActive market
- Cost
- $1.11
- EV
- 85%
- $0.95
- Profit
- −$0.29
- after fee
- Win %
- 10%
- to profit
Avg float ≤ 0.4879 outcomesActive market
- Cost
- $1.20
- EV
- 63%
- $0.76
- Profit
- −$0.54
- after fee
- Win %
- 10%
- to profit
Avg float ≤ 0.4879 outcomesActive market
- Cost
- $1.29
- EV
- 110%
- $1.42
- Profit
- −$0.06
- after fee
- Win %
- 10%
- to profit
Avg float ≤ 0.4879 outcomesActive market
- Cost
- $24.06
- EV
- 78%
- $18.69
- Profit
- −$7.81
- after fee
- Win %
- 45%
- to profit
Avg float ≤ 0.9826 outcomesSome thin prices
Required input float for each UMP-45 | Grand Prix wear
| Wear | Output float | Avg normalized input float | Cheapest route | Best chance |
|---|---|---|---|---|
| Factory New | Not possible — outside this skin's 0.25–0.35 float range | |||
| Minimal Wear | Not possible — outside this skin's 0.25–0.35 float range | |||
| Field-Tested | 0.250–0.350 | any | $1.11 | 25.0% |
| Well-Worn | Not possible — outside this skin's 0.25–0.35 float range | |||
| Battle-Scarred | Not possible — outside this skin's 0.25–0.35 float range | |||
The average is over every input's float normalized to its own range. Output float = 0.25 + average × 0.10.
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.