Stiftung Warentest has taken a close look at 13 bonus programs from supermarkets, discounters and retailers. The sobering result: Only one, as wa.de explains, is really worth it.
The minimum discount that is achieved when collecting points via Payback and Co. is in most cases just 0.5 to one percent. The advantage for the retailer is that he can analyze the buying behavior of customers over a certain period of time and thus send targeted advertising. The disadvantage: Instead of four, customers receive only two codes without registration.