Price Update:
Ok, I checked, and it looks like you should expect to make roughly $100-$150.
Here is an auction that just went for about $150:
(Link removed)
Why are you selling them, if you don't mind me asking?
Edit: Actually, if just shot up to $200+ in the last minutes of the auction, so perhaps you can expect to make that much.
I took the link down, because apparently the seller decided to post some obscene stuff after the auction closed.