They're extremely rare. Rarer than almost anything except an Apple I. Just before I was lucky enough to be gifted mine from a saintly old-timer, I saw one sell for $650. That's the only one I've ever seen for sale, and the seller said he'd received over 60 inquiries. He also said he could have gotten more if he wanted to drag the bidding on for another couple of weeks. I am aware of a gentleman who may be willing to part with a 5110 + dual 8" external drives + printer, but he wants a "very generous offer" for it and the shipping alone would be a killer since the total weight is about 200 lbs (he's in PA). BTW, do you have a web page for your collection? Kai