According to the information of Ito Shopping Card, as long as Ito Yokado's shopping card is used to buy Ito's business, it can be discounted according to the type of coupon when paying the bill, so it is preferential to buy Ito Shopping Card.

Preferential treatment means lowering commodity prices, that is, reducing profits to give customers preferential treatment. This kind of promotion is very popular among most manufacturers because it can best compete with the prices of competing brands.