As a merchant who also sells this same product, I will give you a few facts.
First, Scuba.com pays Innovative Scuba about $3.10 per bottle for this stuff. Innovative Scuba (and now Trident) purchase this stuff from a distributor, who probably purchases it from the manufacturer. If you order four bottles of it from Scuba.com, you would get free shipping (I think these nuts offer free shipping for any order over $25). The lowest possible cost for traceable shipping to any address in the U.S. is $4.95 via USPS Priority Mail. That brings their DIRECT cost of delivering the four bottles to about $17.35. This is a gross profit of $10.45, before the cost of packaging and handling, and all of the other indirect costs of doing business.
I can PROMISE you that Scuba.com is not going down to the local Hobby Lobby and purchasing this stuff for $1 a bottle, then going to the cost and trouble of printing labels to overlay the "original" label. They are simply purchasing the product from their supplier and taking advantage of a private label program, typical of what you find with mask defog, mask straps, hose protectors, and a variety of other products. It would make no sense to do anything direct, given the low sales volume. With this product, they would be extremely lucky to sell 200 bottles of it in a year. That is a total commerce realization of about $1400 for this product
Phil Ellis