How much could I get if I sell my GBA SP?

I want to sell my GBA SP at GameStop. Its in almost perfect condition. About how much could I get for it?

if you trade it in to Gamestop

i'd say 20-30$!

R u kidding, you probley get like $10-$25 no one wants them execpt like little kids but i sold mine for $30 at a garage sale with 1 game

Gamestop will give you practically nothing for it. Trying selling it to a friend or online.