Help me please!

I am ordering a ps4 online off of airmiles reward miles and I want to sell or trade in my ps3 and all my games. Is it better to trade in my ps3 and games to gamestop and get instore credit to ps4 games? Or should I sell the ps3 and games and get cash?

You'll get like enough money for kinda 3 games if you trade it at Gamestop for in-store credit. The absolute worse deal you'll get it there.