USP-S

USP-S | Serum

USP-S | Serum is a Classified-tier Counter-Strike 2 pistol skin found in the CS:GO Weapon Case 2. Below are market reference prices (Buff163, USD) for every variant, refreshed daily, plus the float range each wear can actually roll. Want one? Trade it directly with another player on P2Trades — browse live listings, no fees.

About USP-S Serum

Serum is a dark USP-S with a green and yellow biohazard illustration on the slide, from the Operation Bravo era and one of the older collectible USP-S finishes. The dark base hides wear well. Scarce in Factory New and modestly collectible.

Rarity: Classified
Float range: 0.00 – 0.25
Case: CS:GO Weapon Case 2
Collection: The Arms Deal 2 Collection

Prices by wear

Wear	Float range	Price	StatTrak™	Souvenir
Factory New	0.00 – 0.07	$120.96	$73.31	—
Minimal Wear	0.07 – 0.15	$52.87	$57.83	—
Field-Tested	0.15 – 0.25	$180.89	$62.58	—

Wear is set by the skin's float value; two items with the same wear label can still look and price very differently. The float range column is this skin's own cap clipped to each wear tier — not the generic 0.00–1.00 scale.

USP-S | Serum caps at 0.00 – 0.25, so Well-Worn and Battle-Scarred versions do not exist — every copy in circulation falls inside Factory New, Minimal Wear and Field-Tested. Any listing claiming otherwise is either mislabelled or a scam attempt; our scam prevention guide covers how that trick is usually run.

What moves the price

The spread across wears is 3.4×: Field-Tested sits at $180.89 while Minimal Wear trades at $52.87. That is a wide gap — condition is doing most of the pricing work here, and a border-float item near the better tier is where the value usually hides.

StatTrak™ copies run about 32% below the plain version on average (compared across 3 wear tiers). Yes, below — on skins whose appeal is purely cosmetic, the counter can be a liability rather than a premium. Do not assume StatTrak is the more valuable side of a trade.