Yes, an interesting but distasteful site. Why don't these Great White Hunter types just go and smash a few windows, and get rid of their destructive tendencies that way?
What ZooPro says is true; the public (you and me) would not quietly tolerate accredited zoos supplying animals to this guy, by either sale, gift or exchange, for hunting purposes.
HOWEVER; I don't see what the problem is with enquiring what he'd be prepared to sell to zoos and for how much. Unless his prices were totally unreasonable, it would be a whole lot easier than importation at the present time.
If his animals do have fresh genetic material compared to what we've already got, I'd be prepared to do a deal with the Devil hisself to get 'em!