Hot Shots and GTA are 2 of the best selling PSP titles. They represent 2/3 of the million selling titles on the PSP (I forget the 3rd), so don't expect a price drop soon.
The Sam Goody at Westlake mall in Seattle is going out of biz, 20% off everything. Hardware (PSP, Xbox, (no 360s) GBA, DS, Micro), iPods, games, movies, etc.
New PSP for $199, etc.