Nothing on eBay? If you can wait until August, there's usually one circulating around GenCon at this or that used RPG dealer... If you can get a list of GenCon dealers with their websites, you might be able to get ahold of one before then. I think GenCon.org might be able to help.
Sorry I can't help more - I like my copy right next to my The Traveller Book.
I've been cruising the various second-hand dealers, but for some reason I tend to overlook eBay. Of course, there it is, for a measly ten bucks U.S. Thanks for the suggestion, milord!
Border Reiver, thank you very much for your thoughtful offer.