Amazon uses binning storage system, so its impossible to guarantee you will be getting real cells.

Because even if you pick a reputable dealer on amazon, say that only stocks real Samsung 30Q cells, amazon warehouse will throw ALL samsung 30Q’s from ALL resellers into the same bin in their warehouse and ALL orders for 30q’s will be picked from this same bin.

Basically stay away from amazon for batteries or anything that is highly faked/copied.