The Bottom of the Barrel is a bar in Fallout 3 located in a shack on the Flight Deck of Rivet City. It is operated by Billy Carol, a thief and a con-artist who uses the bar as a front for selling stolen goods. As opposed to the stores in the Marketplace, the Bottom of the Barrel is only open from 12 a.m. till 6 p.m.
Until the Lone Wanderer can pass a speech check, Billy Carol will insist that he merely runs an extremely unprofitable bar, something he attributes to the greed and selfishness of the other merchants. Once the speech check is passed Billy Carol will allow the Lone Wanderer to access his inventory at the cost of 50 caps for each time his store is accessed.