I want to trade in my PSP so I can get money to save for a DSi, how much can I get at Gamestop, Gamecrazy, etc.(I don't shop online)

Probably about 60-80 bucks.

really, that's more than I expected??

I'd wait until E3. Rumors are a new PSP will be released with touch screen and downloadable games only, no disc slot. Could be interesting, and if true, you can bet Gamestop will have a deal where you can trade in a PSP toward its purchase. And if rumors aren't true, you'll only have waited three weeks for the DSi, which thus far doesn't have that much to set itself apart from a normal DS.

Hmm... that does sound intersesting

Simgrim- I think your wrong about that, unless they take off an awful lot for missing analog nubs and such. maybe that was awhile back?
I saw someone recently try to trade a psp 2000 with a missing analoge nub and, if I remember right, the most they were going to give was 20 dollars trade-in value.

That sounds more like Gamestop. LOL