Um, I said or meant to say nothing about Kodak or Fuji. Rather the distributors and dealers. Try to compete by dividing up larger sizes and reselling and the small start up is going to run into those problems.
A dealer selling in a local market, who needs a few kits for sale in a store, can take a large quantity and split it up, probably only work in a major city market where there are enough people to use such kits. For sale online, probably not worth it. Unless you have a distributor who is splitting large kits, and reselling to dealers and is large enough to get discounted shipping. In that case, the dealer can get the stuff drop shipped directly to the customer, saving on shipping fees, and hazmat fees. Carriers charge a lot for hazmat, because while almost everything can be machine sorted, dangerous goods need to be handled by hand, and that's expensive.