+ 6% bleach is about 0.5lb / gallon, so . . . . 2.98 / (1.42 x 0.5) or ~$4.20/lb Cl2 equivalent

I saw in another recent post and of course people mention in passing all the time that they get bleach cheaper than liquid chlorine or whatever from the pool store. I thought I had calculated them down to a comparable level and found that not to be the case in my area.. am I making a mistake?

How I calculated it:
Chlorox 6% bleach = $1.98/96oz at publix
LC 10.5% chlorine = $4.50/320oz at local poolstore

So I figured I'd calculate how much I'd pay in each case per ounce at 1%
watered down to 1% it would be
96oz*6=576oz of 1%
320oz*10.5=3360oz of 1%

$1.98/576oz or $0.44/Gallon or $.003/oz
$4.50/3360oz or $0.17/Gallon or $.001/oz

There's definitely some lost accuracy due to rounding between price/oz and price/gal, but I think it's roughly good

Did I totally screw this up and have been overpaying? If I have, at least I can console myself with the fact that I only buy a few jugs a year for shocking and cleaning things up out back.