This information is from: http://www.eventhubs.com/news/2010/mar/26/cliff-notes-version-huge-nakky-blog-q/
"If you have a Street Fighter 4 save file on your system, then there's an 11th color available for the characters"
So, i pre-ordered New Super Mario Bros Wii with two-day shipping, but it doesn't come out until Nov 15th (My free trial ends on the 11th).
If a game you pre-order comes out after your Amazon Prime Trial ends, do you still get free shipping?
I got the same credit yesterday. I'm pretty sure it's a really late ODST credit because i never actually received it (I ended up contacting Amazon about the lack of ODST credit and got gifted $10 instead).