What is the ounce size of your wholesale bars?
This is actually a very good question. Handmade soap has a fairly high percentage of water in it. When it is first made it pours like pancake batter, lye water solution being about 1/3 of the mix at that point. After three days or so the product is hard enough to handle and cut. The bars are laid out on stainless steel screens and dried for a month. When water weight drops below 12% it is ready to take off the drying racks and can be sold. As water continues to slowly cure out of the bar the weight continues to drop.
We calculate that a year after a bar of soap is made its weight will occasionally drop below 3.3oz. This is a factor of, among other things, the barometric pressure the day the soap was made. Therefore we label our bars at 3.25oz. Our typical bar soap is 4.1oz (5 days after it is made) and average 3.8 oz +/- the day we ship it. For years we labeled our bar soaps at 3.75oz (now industry standard) but several fines later we have learned to err on the side of caution in labeling bar soaps.
All the Best!