How much will i get if i trade in my psp at gamestop?

i have a a phat psp
thug 2 psp game
project 8 psp game
alien vs predator requeim psp game
predator the movie psp
lumines psp game
spiderman psp game
kotor for xbox
star wars republic commando for xbox
one wired xbox controller
one wireless xbox controller
halo 2 collectors edition for xbox
2gb memory card for psp
psp charger
super mario brothers 3 for game boy advance.