I've been keeping a "eye" on eBay for lenses for years. The projection lenses and "taking lenses" you see on eBay are almost always there, they aren't new. They won't work with HT projectors. Tiny in comparison to what you need. Very rarely, but it has happened, you will see a high end HT type lens, or a Digital Cinema (1.25x) lens there. Pretty rare. And always risky. They rarely have lens caps, or the original hard cases needed for proper handling and transport. The people selling them often have take-offs from old Runco projectors and think they have more then they really have. I've known a couple of people to get stung with damaged glass and bad coatings. But about a year ago Meridian dumped about 3 of them on eBay when they got out of the video business, and those people got a steal. Only time that's ever happened that I know of.