Thankfully the pool builder left us with a pretty nice startup kit that's kept is in chemicals for almost two months. We are however starting to run low on muratic acid, and need to buy baking soda, bleach, borax, etc. Figured I'd just grab most of it at Walmart, but one of my neighbors mentioned she picks up some stuff at Costco and has a Subscribe and Save at Amazon for some things as well. I also heard someone else mention they buy Muratic acid at ACE HW? I would have never thought to look there. So who does generally have the best prices? And how much should I expect to pay for the various chemicals you typically need for maintaining the pool?