I don't know why it took me so long to see it..well I have a good idea, but it hurts me to think about it
While buying some awhile back, I noticed they sell it by the gallon also, at a pretty good discount to the bottles.
Since I don't drive my truck hardly at all now, I noticed I was having some issues with it( I really like the real time fuel monitors). The Seafoam cured it, so now I use it in My bike, truck, and the wifes vehicle, the boat, the lawn mower, and diesel gennie.
O'reilly's, had it for $51.00 a gallon. I just refill the smaller 1 pint bottles now.
It was a savings of a little over 12 bucks.