I would not gauge reliability with a store's product list. They are in business to make money, and nothing else.
I can't tell you this product is bad or good, but if you watch this video, Bacteria in a Bottle: Snake Oil or Worth Trusting?
you will see him tell us that everyone up until now has been using the wrong bacteria in their tanks and this is the right bacteria, which is not true. I think I could find thousands of fish keepers that will dispute that claim. Also, they did the test in the video with that big tank and only 2 tiny fish. Hardly proof IMO