Looking at the specs for this SSD.
It doesn't appear to be using one of the front runner SSD controllers, such as Indilinx, Intel, or Sandforce.
Also from the specs, it doesn't appear to support TRIM.
So my guess would be this is not an up to date drive, which is perhaps why the price is as low.
Now is a good time to be buying Indilinx Barefoot based drives, as they are being heavily discounted at the moment, to clear stock for the forthcoming "mainstream" Sandforce based drives. Or wait a couple of weeks and see what prices are like for the Sandforce SF1200 based SSD's.