see my list for these:
GBA-Castlevania: Circle of the Moon $8
GBA-Donkey Kong Country 3 $15
GBA-Advance Wars 2: Black Hole Rising $12
GBA-Yoshi Topsy Turvy $14 shipped (complete/played once)
GBA-Super Mario Advance $12
GBA-Super Mario World: Super Mario Advance 2 $15