Wow, yeah that's a great price on those. I hope people are able to take advantage of the deal. These are great tools to have if you have the budget for them.
UV meters associated with this company (and the company they purched from) may have been repackaged and potentially tampered with. Some of those meters arrived to customers damaged or not functioning properly. (This happened on another forum I'm on where I originally found the link).
If you did order a meter please check it carefully (should come with a box, a case, instructions and a calibration card) and if you don't revcive it properly packaged contact the Solar Light Company. See this post for more info: viewtopic.php?f=34&t=231309#p1784920