Playstation 4 preorders are running red hot right now and if you want a console on launch day, then we highly recommend getting in the line early. That said, if you want to preorder some games at the same time, Amazon is running a special deal that might interest you.
If you have some old games, consoles or accessories that you want to trade-in, they’ll give you an additional $10 on top of whatever you trade. For example, trade in $30 worth of old PS3 games, and they’ll give you $40 back in credit total. This is a great way to get rid of games you’re never going to play again, as well as save a few dollars on next-gen PS4 games.
All the details you need are on this page at Amazon, including the PS4 games you can preorder.