Halo 3: ODST Collector's Edition isn't for you and you enjoy saving money, we've got some good news for you. Buy.com is currently offering ODST pre-orders for only $49.99, a full $10 off the retail price. Even better, shipping is free. And don't worry, you'll still get your redemption code to play as the invincible, cigar chomping Sgt. Johnson too.
If you haven't already laid down pre-order money elsewhere (or even if you have), this is a pretty decent deal.