The lights are on
It depends on which model PS3 you have and since it is defective they will take somewhere between $10-$20 off the trade in value to send it out to get it fixed. If you call Gamestop and they aren't super busy sometimes they will tell you how much it trades in for. Sometimes they have deals for system trade in's too (like an extra %50 or double trad in value). Check the website to see if there are any deals and take advantage of any sales or bundles they may have.