Killing Floor is a cooperative first person shooter developed by Tripwire Interactive and released in 2009, building on an earlier Unreal Tournament mod. Between waves players visit the Trader to buy weapons and armour with money earned from kills, and the Trader comments on their purchases with short voice lines. This clip became a standalone soundboard favourite because the transaction moment is so familiar to players, and the line now gets reused outside the game whenever a sale, trade or handover needs a knowing, self satisfied reaction.