Amazon is starting to get fairly aggressive with their used game/trade in business.  The latest promotion just kicked off, and here are all the details...

Submit a video game trade-in order with a total value of $50 or more in our Video Games Trade-In store before July 11, 2009 and in addition to your Amazon.com Gift Card, you'll receive an extra 50% off your next video game or accessory purchase in the Video Games store.

Limit one discount per household.

Check it out: Amazon Trade In Promo