if it looks really good that sounds close to descent deal. Lowball at first tell him 2750 to give you some extra room to play
Im not sure what the draw could be. I havent run into that problem yet. normally on volvos its a module not going to sleep. A good way to locate it is hook up a amp meter in series with the ground side of the battery and start pulling fuses untill your current drops to around .250 amps or lower.
im sure someone on here has experienced a similar issue and can give more accurate advice.