coupon code: CHEAPASS15
www.Direct2Drive.com offers preorder downloads of Battlefield 3 Limited Edition(with Karkland expansion) for Windows for $53.95.
Coupon code "CHEAPASS15" cuts it to $45.86.
Coupon expires September 16.
Your not going to find it any cheaper.
You can't download it until it is released.
regular full retail price is $59.99.