- Cost
- $11.00
- EV
- 42%
- $4.65
- Profit
- −$6.95
- after fee
- Win %
- 0%
- to profit
Avg float ≤ 0.140 (needs < 0.140)5 outcomesActive market
Reverse trade-up finder
Trade up to MP9 | Ruby Poison Dart
10 Mil-Spec Grade skins from the Falchion Case collection can become MP9 | Ruby Poison Dart. 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 MP9 | Ruby Poison Dart needs an average normalized input float below 0.1400 (output float 0.000–0.070). Best chance per contract: 20.0%.
- Cost
- $105.66
- EV
- 57%
- $60.40
- Profit
- −$53.14
- after fee
- Win %
- 40%
- to profit
Avg float ≤ 0.139 (needs < 0.140)8 outcomesSome thin prices
- Cost
- $3.78
- EV
- 46%
- $1.73
- Profit
- −$2.28
- after fee
- Win %
- 4%
- to profit
Avg float ≤ 0.140 (needs < 0.140)10 outcomesActive market
- Cost
- $3.79
- EV
- 44%
- $1.67
- Profit
- −$2.34
- after fee
- Win %
- 4%
- to profit
Avg float ≤ 0.140 (needs < 0.140)10 outcomesActive market
- Cost
- $4.01
- EV
- 40%
- $1.60
- Profit
- −$2.62
- after fee
- Win %
- 4%
- to profit
Avg float ≤ 0.139 (needs < 0.140)10 outcomesActive market
- Cost
- $7.06
- EV
- 75%
- $5.26
- Profit
- −$2.48
- after fee
- Win %
- 20%
- to profit
Avg float ≤ 0.136 (needs < 0.140)10 outcomesActive market
Required input float for each MP9 | Ruby Poison Dart wear
| Wear | Output float | Avg normalized input float | Cheapest route | Best chance |
|---|---|---|---|---|
| Factory New | 0.000–0.070 | < 0.1400 | $3.78 | 20.0% |
| Minimal Wear | 0.070–0.150 | ≥ 0.1400 and < 0.3000 | no priced route | — |
| Field-Tested | 0.150–0.380 | ≥ 0.3000 and < 0.7600 | $1.16 | 20.0% |
| Well-Worn | 0.380–0.450 | ≥ 0.7600 and < 0.9000 | no priced route | — |
| Battle-Scarred | 0.450–0.500 | ≥ 0.9000 and any | $4.29 | 20.0% |
The average is over every input's float normalized to its own range. Output float = 0.00 + average × 0.50.
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.