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★ M9 Bayonet | Doppler
Knife finish

M9 Bayonet | Doppler: price, cases and trade-ups

The M9 Bayonet | Doppler starts at $1,000.68 on the Steam Market and drops from 3 cases, at best 1 in 11,730 per opening. It can also be made by trading up 5 Covert skins from one of those cases; the routes are below.

Rare Special ItemFloat range 0.00–0.08Chroma 2 CaseChroma 3 CaseChroma CaseAll M9 Bayonet finishes
Price from
$1,000.68
Minimal Wear
Drops from
3 cases
Chroma 2 Case
Best drop odds
1 in 11,730
0.0085% per opening
Avg cost to unbox
$251,491.20
in the Chroma 2 Case

M9 Bayonet | Doppler price by wear

WearSteam priceStatTrak™ priceChance of this wear
Factory New$1,385.15$1,360.8587.5%
Minimal Wear$1,000.68—12.5%

Steam Community Market averages from the csgotrader.app steam.json (Steam Community Market) snapshot, market data updated Oct 27, 2026; a dash means no usable price. Chance of each wear is its share of the finish's float range, which is how a fresh drop's wear is rolled. Buying the cheapest one costs $1,000.68; unboxing this exact finish costs about $251,491.20 in openings on average.

Cases that drop the M9 Bayonet | Doppler

CaseChance of this finishFinishes in poolOpen costAvg cost to unbox
Chroma 2 Case0.0085% · 1 in 11,73030$21.44$251,491.20
Chroma Case0.0085% · 1 in 11,73030$22.55$264,511.50
Chroma 3 Case0.0085% · 1 in 11,73030$27.23$319,407.90

The chance is the case's gold odds split evenly across every knife finish in its pool, before wear and the 10% StatTrak™ roll. Your chance over many openings is on the knife chance calculator; every case is compared on knife odds by case.

M9 Bayonet | Doppler phases

PhaseShare of dropsOdds in the Chroma 2 Case
Phase 122.5%1 in 52,133
Phase 222.5%1 in 52,133
Phase 322.5%1 in 52,133
Phase 422.5%1 in 52,133
Ruby4.0%1 in 293,250
Sapphire4.0%1 in 293,250
Black Pearl2.0%1 in 586,500

Valve has never published phase odds. These shares are the usual community estimate from unboxing samples, and Steam lists every phase under one market name, so the prices above are not per phase.

Trade up to the M9 Bayonet | Doppler

Prices as of Oct 27, 2026Steam Community Market averages · snapshot 2026-10-27 10:25 UTC

Factory New ★ M9 Bayonet | Doppler needs an average normalized input float below 0.8750 (output float 0.000–0.070). Best chance per contract: 3.3%.

★ M9 Bayonet | Doppler
Highest chance
FN3.3% chance· $1,385.15
Covert → Knife / Gloves
Cost
$702.56
EV
79%
$556.47
Profit
−$218.67
after fee
Win %
23%
to profit
Avg float ≤ 0.780 (needs < 0.875)60 outcomesSome thin prices
★ M9 Bayonet | Doppler
Cheapest
FN0.67% chance· $1,385.15
Covert → Knife / Gloves
Cost
$281.20
EV
81%
$228.99
Profit
−$82.08
after fee
Win %
11%
to profit
Avg float ≤ 0.762 (needs < 0.875)43 outcomesSome thin prices
★ M9 Bayonet | Doppler
FN0.67% chance· $1,385.15
Covert → Knife / Gloves
Cost
$287.48
EV
80%
$230.03
Profit
−$87.45
after fee
Win %
11%
to profit
Avg float ≤ 0.652 (needs < 0.875)43 outcomesSome thin prices
★ M9 Bayonet | Doppler
Best EVBest profit odds
FN0.67% chance· $1,385.15
Covert → Knife / Gloves
Cost
$438.24
EV
101%
$442.82
Profit
−$53.18
after fee
Win %
33%
to profit
Avg float ≤ 0.680 (needs < 0.875)95 outcomesSome thin prices
★ M9 Bayonet | Doppler
FN0.67% chance· $1,385.15
Covert → Knife / Gloves
Cost
$444.52
EV
100%
$442.82
Profit
−$59.46
after fee
Win %
31%
to profit
Avg float ≤ 0.570 (needs < 0.875)95 outcomesSome thin prices
★ M9 Bayonet | Doppler
FN0.67% chance· $1,385.15
Covert → Knife / Gloves
Cost
$452.01
EV
98%
$442.82
Profit
−$66.95
after fee
Win %
28%
to profit
Avg float ≤ 0.680 (needs < 0.875)95 outcomesSome thin prices

Required input float for each ★ M9 Bayonet | Doppler wear

WearOutput floatAvg normalized input floatCheapest routeBest chance
Factory New0.000–0.070< 0.8750$281.203.3%
Minimal Wear0.070–0.080≥ 0.8750 and any$346.003.3%
Field-TestedNot possible — outside this skin's 0.00–0.08 float range
Well-WornNot possible — outside this skin's 0.00–0.08 float range
Battle-ScarredNot possible — outside this skin's 0.00–0.08 float range

The average is over every input's float normalized to its own range. Output float = 0.00 + average × 0.08.

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.