Thank you for posting this here, I'm not sure how much monetary value the print itself may hold, but I could've made a fairly costly mistake on Ebay if I hadn't seen this.
http://cgi.ebay.com/comic-con-art_W0QQitemZ320263119680QQihZ011QQcategoryZ972QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
For as long as it's valid, check out this auction listing. The listing is so vague, I figured it was too good to be true and that it had to be a print or even a forgery, but my imagination kept telling me that maybe it came from an estate sale or a grandparent's attic or something of that nature. Seeing exactly the same piece here really drove home the idea that I was dreaming hehe.