How Much Would Gamestop Pay for Used Wii Games?

I homebrewed my wii and backed up all my wii games to an external hard drive and can now play the games without the discs, so now i have about 20 wii games that sit there and collect dust. Some I paid like $10 for and some I paid $50-60 for like Twilight Princess and Super Smash bros. Brawl and Raymen Rabbids 2 etc. so how much would Gamestop pay for them?

almost nothing. First of all, Wii is the least popular console. Second of all, a video game store will only pay you about 50% of what you could get selling it yourself.