That's a pretty old drive, based on an even older (second-gen) SandForce controller. Per
this review, it was a poor performer even by 2013 standards; the main thing it had going for it is cost/GB. The review also mentions that part of the reason it is slow is that it only has 4 flash chips in it, which means it is using only 4 channels of the flash controller (the SF-2281 in that drive supports 8 channels, so it's working with half the raw bandwidth it was designed for). So this is clearly a cheap design which was intended to hit a particular (rock-bottom) price point.
It'll still be a step up from a mechanical HDD, but unless your budget is really tight I'd look elsewhere.
Edit: I wonder if Newegg (or Mushkin) had a truckload of old stock they've decided to unload at a loss. I'd be a little surprised if they're still manufacturing a design that old.