All Nisa stores have been made eligible for a rate of 0.8 for American Express (Amex) card transactions.

With the introduction of the 0.8 rate for Amex card holders, retailers will also be charged less per transaction. Amex card holders spend an average of four times more than the average card holder, the bank said.

Booker recently partnered with American Express (Amex) to allow its card to be taken at Premier, Londis, Budgens and Family Shopper stores, which will help boost profits for store owners, according to the wholesaler. Booker also offers a rate of 0.8 for Amex customers.

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