This bad boy is on Amazon.com for $85.94 and available for Prime. It has terrible reviews with 2 1/2 stars and 8 reviewers though I encourage you to read each of them. 2 are people reviewed w/o installing it yet and gave mediocre stars, etc.
Looks like there are concerns of water flow.
It has more and better reviews over at overstock.com though price is higher ($189.90)