I don't know how good of a deal that is. It seems like it's just a 250GB drive in a Rosewill case:
http://rosewill.com/product/product.aspx?productId=80
You can get the case for cheaper on eBay or in other online stores, and drives are fairly inexpensive nowadays. I would say you should just buy the two components separately and put 'em together yourself. Not too hard to do.