I think what were getting at is if you pour 2 1/2 gallons a night its worth mixing for 10 miniutes for 2 mixes x 10 bucks savings.
If you are stiring the same 5 gallon over 1 month, two or three months its really not worth it, say 10 minutes x 15 mixes = $150.00 on top of what we are paying for the 5 gallons. Something like that my head hurts now