I have sold many amazon gift codes (see my thread
http://forum.bitcoin.org/index.php?topic=22011.0 ) and have bought over $500 worth in the last day or so... while 19BTC would be a bit more than I would like to trade for currently, I would do ~9BTC or so. I usually do a little bit above market rates (say, 9BTC for $128 gift certificate). I would maybe do more than 9 if you'd like to do a better rate as well.