There's line working breeders, f1 chuckers, s1 chuckers, middlemen, scammers, bulk resellers everything you can imagine in the seed business. Sucks, but it's the truth. I think that's why you'll see people around here get attached to specific breeders, rather than seed banks. And so they'll buy seeds either direct from the breeder, or from authorized seed banks. Most banks will operate out of the US, UK, or Spain. You'll notice the legit authorized US banks are quite a bit different from the UK and Spanish banks. The UK/Spanish ones are easy to identify. They offer multiple currency options, and probably have 10K different fem and auto fem versions of gg4, wedding cake, northern lights etc.
Whereas the US banks, things are more delineated by breeder. And people camp and snipe the latest drops. Very different vibes from across the pond.
Each has their place for sure. Fwiw, if I wanted cheap consistent auto-fems, I'd look to the Spanish makers.