hi, we all are
amazonDOTcom customers, arent we?

i can buy standard books, CDs, etc. from there without problems.
i live in Europe and with standard VPN techniques i can also buy AmazonMP3's (amazonDOTcom).
but when it comes down to Amazon Instant Video, then the VPN techniques help me get to some point (deep in the order process) when all of a sudden i get an error message: "your credit card must be issued by a U.S. bank. yours isnt. go back to your own country bye."
i dont have
Kindle and i dont read kindle stuff so i havent ordered kindle stuff and i dont know if you must be U.S. resident.
As just mentioned, with VPN i can buy amazonmp3's, and with VPN i cannot buy amazon instant videos.
hope this helps.