I, too seldom go in a pool store except to buy a new net, etc. And, when I do, I have to hold my tongue. I was in there a few weeks ago looking at new liners and the guy in line was being told he needed this and that and more and more -- all baquajunk products. Who knows what his bill was when it was all totaled up! The guy who owns the store is a really nice guy and I do buy there if I need replacement equipment, etc., but he has quit asking if I need my water tested. He already knows the answer to that!