I don’t know if this is helpful info or not… but the 160g boxes of TMP are almost the same price per gallon retail as the 200g buckets when you can find them. Actually the smaller boxes are slightly less expensive per gallon usually. If they are less expensive to ship in bulk since they pack better, and easier to store for the same reason, that might be an LFS approach worth considering. Those of us who have been doing this for a while have enough 5g buckets already