Thanks for the post. I can take my local prices and figure out my value pretty quick.

Though bulk 12.5% chlorine is $2.05 per gallon ($2.27CDN) here to fill either either a 10 litre or 20 litre carboy, much cheaper than the $3.25 per 1 gallon in the calcs, so I don't think the other sources will be able to touch it.