Bests & Worsts Reviews from Amazon

I bought this kit as well as First Alert WT1 Drinking Water Test Kit. Both from Amazon.com, thinking I would try two different kinds just to be sure. When I opened the packages. The exact same contents were inside, right down the the instruction booklet. They are made by the same company and put in different boxes. However, The First Alert WT1 Drinking Water Test Kit is only $12.99.