How much will Gamestop pay for games?

I have my old play station 2 that I want to that I haven't used in a while and I want to trade it in. I also have a few games that I want to sell as well. How much will they take for all of it? Looking to get cash instead of a gift card. Btw the games are all used with no scratches and they all have the booklet that came with them. (I bought a few games from the internet used).