There is a copy of MHI on Ebay

http://cgi.ebay.com/Monster-Hunter-International-by-Larry-Correia-(2007)_W0QQitemZ120284218438QQcmdZViewItem?IMSfp=TL0807181263r13108

Just a heads up.  I’m not affiliated with the seller at all, but he let me know he had one for sale.