You can find people here on the forums that will change AMZ to BTC.
I have been doing so myself if you are interested. I take about a 10-15% discount (the exact amount varies since I usually just choose a round number, the last sale was about 12% I think, but I keep it close to 10%). If the mtgox last is 100, I would offer you 0.9BTC per 100 of amazon you had.
PM if interested.
Thanks for the feedback. I guess my concern with such a transaction is that there doesn't seem to be a way to safely make the trade. Whoever sends their half of the trade could potentially lose their funds, unless of course there was a bitcoin "item" for sale on the amazon.com website. I would probably only be interested in making a very small purchase, say $5.00 USD in amazon certificates just to get comfortable with the process first.