I wouldn't expect less for $300... not a $/performance winner for sure.
EDIT: I just read the reviews (which none was done properly by the way) and did my own research, I DO NOT LIKE that thing.
Its horribly designed, theyre using tiny air cooled TECs to cool the water! Not only that the water will be inefficiently cooled but pair that with a mediocre pump and non-restrictive water block and youll get something that deserves to be called a novelty at most. Without mentioning that youll have a temp limit, TECs third Achilles heel.