It doesn't really matter if the seeds are bred in Spain, the Congo, Antarctica, etc... Some of the Spanish breeders have been doing actual breeding since before many of the US pollen chuckers were even born.
I'm sure many of the US outfits that seem to pop up daily are indeed reselling bulk seeds they purchased. If there is money to be made someone is doing it. All it takes is going to one of the large seed banks and buying 100 seeds for $185. Repackage those seeds in some cartoon packaging, call them anything you want, sell them for $10-$20 a piece. A cheap website, accounts on Instagram, Strainly, etc... Call yourself a breeder, make up wild claims about the seeds. They were sourced while on a trip to some jungle, smuggled out of a war zone, kept since 80's/90's from the original cut, blah blah blah. Do the math.