Fake breeder packs are a real problem in the regular seed market, especially for sought after lines that have sold out. Resellers on auction sites repackage cheap seed in copied packaging, and since regulars show huge natural variation, the buyer often does not realize until months later. A list of breeders who sell direct, plus the authorized banks each one works with, is kept on
https://breederregularseeds.com and is updated when a breeder drops a vendor. Paying a bit more to a verified source beats losing a whole run.