Game Stop Trade in Question
 

Is there a limit to the amount of games you can trade in for cash ? I have about 20 Titles (XBox and PS2) nothing great. Just regular games none are new releases.

No there's no limit but you'd be better off listing them on eBay. Unless it's a hot new title Gamestop will be giving you change.

Yeah, you'll most probably walk out VERY disappointed if you walk in with 20 games!

They're crooks I tell ya!
Unless of course the games never cost you anything in the first place.
In that case, "easy come, easy go"

At the very least, go to EB instead. They're currently offering an extra $10 for each 3 PS2/GC/Xbox games you trade in. There are no exclusions.

But as others have said and will no doubt say again, a better bet would be Ebay or Half.com. I've sold over 100 games on Half.com, almost always getting more than what I had originally paid for them (sometimes several times more).