I bought this used, like new. It looks like an earlier version since some of the youtube videos show slight differences and perhaps better finishing. My main complaint is that the uniformity of the tiles is lacking. I had to get out my Dremel to polish off the rough edge to make them fit and slide in smoothly. Also, but not so important, it is a royal PITA to install the little tiles into the case. Especially since the quality control seems lacking. Bottom line: it functions as it is supposed to.