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.