Sad vidim da je takvo pravilo za povrat robe skroz normalno vani, npr. u Sephori:

If you are not completely satisfied with your purchases, simply return the merchandise with your receipt to any Sephora location. We will be glad to credit you in the same form of payment with which your purchase was made.
CVS:

The CVS/pharmacy beauty guarantee - 100% satisfaction.

 Be 100% happy, or receive 100% money back on any beauty product. If you are dissatisfied for any reason, you can return the beauty product (opened or unopened) along with your receipt or invoice to any CVS/pharmacy store. We will refund the full purchase price—no questions asked!
Tako da i dalje ne vidim ništa "neprimjereno" u tome da i DM nudi istu stvar i da je ja prihvatim.