Actually, I HAVE looked through the Zos' at several gunshows throughout the South. The ones I have seen typically sell from $79- $300. They are not very clear, and have a very short eye relief.
They are identical to the cheaply made but overpriced Osprey's I see and compare them to at the same shows.
Some look to be Chinese made, while others look like some of the older Communist bloc series scopes.
Everyone has their likes/dislikes. If you like what you see in these scopes, by all means, get one/some. Bear in mind, myself, and the other guys on this sight are very knowledgeable on the subject of optics, and would rather see you spend your hard-earned cash on something of more quality and reliability. Just name a price range and you will get the best help on the planet here, and Chris Farris certainly has great prices and THE BEST service.