Many people on Ebay will lie about the unit and play stupid when you ask questions. For instance, when they say the unit only has 60 hours, what they mean is that the lamp counter shows 60 hours since they reset it from 2000.
When they say MINT!!!, I have no idea what they mean since to me MINT!!! means new and untouched and would never apply to an open box unit with 600+ hours.
When they say works great, they mean while it's on. They seem to forget that it shuts off after five minutes. When asked, they will say they never tested it longer than a minute or two. (AX-100 iris shut down)
Be careful what you bid, expect to need a new bulb, and always buy an extended warranty.
I bought an AE-900 that turned out to be an AE-700 stuffed in a 900 body. I got a Squaretrade warranty with it that ended up paying out the purchase price after the blue LCD broke down about a year later. Thank you Squaretrade!