I also saw a ULS M 300 - M 300 laser engraver listed again. Opening bid was something like $1. I have questions in to them, but I would guess they won't have an answer. This one is out of New Jersey, if my memory serves me right.

Robert H. Bosworth
ACCESS Business Solutions, Inc.
Hudson, WI. 54016
(715) 386-8021
www.usedlasers.com