I bought mine for a Earbud and a key but I didn't get a screen shot, but I did find other people selling theirs which I have links for. This is a cancer unusual but it is one of two so far. I would assume because of it being a cancer, as more are uncrated, it will quickly go down in value but right now it doesn't have a price.

People selling theirs:

http://www.tf2outpost.com/trade/14863962

http://www.tf2outpost.com/trade/16250452

Again this will probably go down but for now it is temporary until people unbox more. The two prices where near 20-25 keys but closer to 30 keys. I was thinking of pricing it lower is because the guy that sold me mine seemed as though he had started selling it like these people but given up after waiting so long and lowered his price, these people might do the same. Even a friend that examined the hat told me it was a cancer.