The reason it sold cheap is because the title didn't include the word Matrix. I have done searches for Cen Matrixes every few days and missed that listing. If you type Cen Matrix to search under it will not show up. If I had seen that auction I probably would have been the high bidder.

Also, the price of them actually has gone up. There is a seller that has them on ebay and when he first started off they were going for $211-240. The last one ended at $349.