I haven't come across this one. I have come across others, some of which are pretty good for the price. But I wouldn't get an off-brand from eBay without a specific recommendation.

If you're looking on eBay, you're obviously dealing with an limited budget. If this is the way you need to go, I'd stick with known major brands and sellers with high approval ratings. There is some good stuff, but also a lot of crap.

Or.. have you looked at the bulletin boards at your airport. Mine always has something from a local pilot who has either upgraded or is leaving flying.