From prior experiences (I've never payed attention to price changes in the past, so I'm not sure), does anyone think that the 7800GT will drop significantly in 4 months from now? I ask because I'm thinking about getting a 6800GS to replace my 6600GT and then maybe using EVGA's step-up thing to upgrade to the 7800GT at little cost 3 months later. Does this sound reasonable or no?