The American Best Buy exclusive edition came with a sheet with a code to download two bonus weapons and six alternate costumes. The title on the spine is written in plain text. It also came with a manual, and the disc seems to be the same which came with the other editions.
1. Front
2. Back
3. Spine
4. Disc
5. Front of manual
6. Download coupon (censored code)
Thanks to eBay members everythingsells412 (images 1-2, 4-5), jonny81-4 (image 3), and unknown (image 6).