29" Arcade monitor for $10.00? Sounds like a good deal to me. These show up infrequently on ebay and craigslist around the country. Don't know about this particular auction though, things like "we were unable to test it further" are not always a good sign.
but if you live near enough for local pickup and you're willing to risk it:
I have several of these studio/presentation type monitors, and all of them are great.
This monitor would be perfect for somebody who was into MAME and wanted to play games in their original resolution but didn't have the space, time, or money for a cabinet.
Also, I use my 37" monitor like this one for playing 720p video, and it looks really good. Maybe not quite as sharp as modern HDTV's, but still miles better than watching on an equivalent SDTV.
Don't know about this particular auction though, things like "we were unable to test it further" are not always a good sign.