You might want to think over the idea of going back to ordering on line.
Yes, I know, money is money and "a penny saved is a penny earned" but that dealer has gone thru a lot of crap just to be able to sell the black powder.
He had to apply for and get a license to sell explosives. He had to build a special powder vault to store it in. He had to deal with Federal regulators inspecting his store and storage area. He might have to pay additional insurance premiums. He has to keep records of his sales.....
All of this just to make maybe $6 a pound profit on something that might not sell over 2 to 3 pounds a week.
IMO, he's walked the extra mile by bringing black powder to your area so, he might deserve your business. In fact, you might want to thank him for going out of his way so people in your area can have access to real black powder.
Just something to think about.