Leslie's just did a buy 3 get 1 free in liquid chlorine. They're still expensive across the board, though. Plus, it seems like every time I go in to pick up a calcium (I like their brand - I can add a bunch at once and it doesn't cloud my water) I get behind someone who has no clue what they need and it takes forever to get checked out. You figure I'd be smart enough to just start ordering online for pickup, but yeah, no.
We need a PinchaPenny in CS. I'll usually drive to Conroe for my monthly chlorine runs. I'm east of CS, so it's not completely terrible, plus I have good luck with their chlorine not salting up my Stenner tank and lines.
Walmart chlorine seems cheap, but it's 10% versus 12% and I've found it creates a ton of salts in my tank. Not as big of a deal if you're adding it direct, but watch your calculations if you're using it intermittently and be sure to adjust for the lower concentration.