False information. In order to herb in BfA zones they need an active account. They use stolen credit-card numbers to activate those accounts. When the credit-card holder disputes the charge, Blizzard must pay it back plus a handling fee. All that is outside of the man-hours it takes to investigate and address reports about them.
If you find that pots are expensive, make an alchemist and make them yourself. It doesn’t require buying a WoW token.