This year, Great Escape is selling cases of four 1 gal bottles of 12.5% "pool shock" (sodium hypo) for $10. They raised the price a buck from last year but its still cheaper than reg bleach at the stores around here. If my math is right, it comes out to about 1.25 a gallon (reg bleach). Most stores here are selling 5% 96 oz anywhere from 2/$3 to 1.99.
