I'm glad there are smart people who have found alternatives. The ability to get what you need locally without taking it in the shorts is a definite plus. Worrying about the price of PBW (from one of the non-gouging retailers) seems like more trouble than I want though. At $35 for 8# it's not terribly bad when you figure how many uses you get out of that 8#, and how little that use now costs.
Don't get me wrong, it's not name-brand snobbery at all. It's just that if I place an order and I also get my PBW, I save time, I save money because I'm not driving on Saturday morning to get what I forgot to get when I should have bought it from Midwest or NB, and I'm not mixing things when I should be drinking beer and grinding grains.
Some folks are obviously more organized than I am and remember to ask their wife to get the Oxyclean and they remember to get the TSP @ the man-store. Awesome! I ain't that guy though so I just have a jug of the stuff I remember to order online whenever the mood strikes me. I am paying for that convenience and I'm okay with it.