Probably easier to sell it on bitmit.net.  That's where I sell my gift cards and claim codes.

Sample item:
http://www.bitmit.net/en/trade/i/7176-amazon-claim-code-egift-card-100/description

I sell Walmart, Target, and Amazon gift cards on bitmit.net.  Amazon claim codes are also available.  Available only for the US market though.

Here is a sample item:
http://www.bitmit.net/en/trade/i/7176-amazon-claim-code-egift-card-100/description

I've been using it for a few weeks and Bitmit rocks!  It is just a matter of time before it becomes the eBay for bitcoins.

I am selling Walmart, Target, and Amazon gift cards as well as Amazon claim codes.  Only for the US market though.

Sample items for sale:
http://www.bitmit.net/en/q/?q=amazon+claim+code

Using Bitmit does a good job tracking feedback and doing business with reputable buyers and sellers.  It's escrow feature makes it safer to do business (e.g. buying and selling gift cards) there instead of here in a forum.

I am selling Walmart, Target, and Amazon gift cards on www.bitmit.net.  They are a great way of spending bitcoins in the real world.  Amazon claim codes are also available.  Check it out.

http://www.bitmit.net/en/shop/c/23-money/2-us-dollar

In general, Bitmit is a great way of buying and selling items with bitcoins via its escrow feature.  It is the eBay of bitcoins.