On Thu, 25 Apr 2013 04:55:32 -0700 sms wrote:

You can only imagine the mark-up on liquid chlorine if they are able to
make sufficient margins at $2.50/gallon versus $4.25/gallon of the place
that's $17/4 gallons.

I've been going to those pool guys in Saratoga ever since you guys
here on Alt.Home.Repair clued me in about their web coupon which
essentially is a buy-one-get-the-other-for-tax deal:

http://www1.picturepush.com/photo/a/...g/12781984.jpg

Out the door, it's $21.62/8 gallons, or about $2.75 per gallon.

The cost-per-effective-chlorine (or free chlorine) calculation is:
$21.62/8 gal x 1 gal/9.7 pounds x 1/10.8% by wt available chlorine = $2.58/pound FC