Man, something I can actually get easier up here in Canada than some of you guys can. They even sell the 12% stuff at some corner stores. 2 Gallon jug is $7.50 CAN at the hardware store around the corner from me. Works on exchange for the containers, so once you 'buy' a jug, you just swap out for $7.50. The pool stores are 50 cents or more cheaper but I burn too much gas to get to them for 50 cents cheaper. Good luck!
PS. My Brother in-law lives in McKinney
PS. My Brother in-law lives in McKinney