- Cost
- $77.89
- EV
- 37%
- $28.66
- Profit
- −$52.97
- after fee
- Win %
- 0%
- to profit
Avg float ≤ 0.099 (needs < 0.103)4 outcomesActive market
Reverse trade-up finder
Trade up to M4A1-S | Basilisk
10 Mil-Spec Grade skins from the Operation Vanguard Weapon Case collection can become M4A1-S | Basilisk. 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 M4A1-S | Basilisk needs an average normalized input float below 0.1029 (output float 0.000–0.070). Best chance per contract: 25.0%.
- Cost
- $11.49
- EV
- 35%
- $4.07
- Profit
- −$7.95
- after fee
- Win %
- 8%
- to profit
Avg float ≤ 0.102 (needs < 0.103)9 outcomesActive market
- Cost
- $11.55
- EV
- 35%
- $4.09
- Profit
- −$7.99
- after fee
- Win %
- 8%
- to profit
Avg float ≤ 0.102 (needs < 0.103)9 outcomesActive market
- Cost
- $11.72
- EV
- 39%
- $4.54
- Profit
- −$7.77
- after fee
- Win %
- 8%
- to profit
Avg float ≤ 0.102 (needs < 0.103)9 outcomesActive market
- Cost
- $17.46
- EV
- 61%
- $10.66
- Profit
- −$8.19
- after fee
- Win %
- 5%
- to profit
Avg float ≤ 0.098 (needs < 0.103)9 outcomesActive market
- Cost
- $46.62
- EV
- 66%
- $30.95
- Profit
- −$19.70
- after fee
- Win %
- 25%
- to profit
Avg float ≤ 0.093 (needs < 0.103)8 outcomesSome thin prices
Required input float for each M4A1-S | Basilisk wear
| Wear | Output float | Avg normalized input float | Cheapest route | Best chance |
|---|---|---|---|---|
| Factory New | 0.000–0.070 | < 0.1029 | $11.49 | 25.0% |
| Minimal Wear | 0.070–0.150 | ≥ 0.1029 and < 0.2206 | no priced route | — |
| Field-Tested | 0.150–0.380 | ≥ 0.2206 and < 0.5588 | $1.73 | 20.0% |
| Well-Worn | 0.380–0.450 | ≥ 0.5588 and < 0.6618 | no priced route | — |
| Battle-Scarred | 0.450–0.680 | ≥ 0.6618 and any | $1.75 | 25.0% |
The average is over every input's float normalized to its own range. Output float = 0.00 + average × 0.68.
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.