Well Mark, at that price, it really is a bargain, especially if the quoted price includes the alloy housing (as pictured) that sits between the engine block and the water pump. I do rebuild my own pumps, so I don't have to pay that price, but that's another story altogether. No, I think it's a bargain.
The only concern I would have would relate to the seal - it does incorporate a rubber ring, but I guess that should be okay. Regards Styria