Here is the think about stuff bought on eBay. It tends to be products that sre being dumped for one reason or another. In the case of the what your looking at, there are no specs published and no brand given. You will have no idea if it's any good until you buy it and try it out. Also, with most conventional MH or T5 fixtures, you can repair them easily with off the shelf parts. This isn't usually true with LED lighting.
While the fixture your looking at may be a good bargain, you have no way of knowing for sure, and your spending quite a lot to get it. If anything goes wrong you are really stuck. For LED lighting, I'd go with one of the major manufacturers. Yes, you will spend a lot more up front, but it's a much safer choice.