Checkers Hyperama Mayville shopping Mall

I went to buy a 9V battery from them to find out that Clicks in the same mall had the same Duracell plus. Checkers price was R114.00 per battery while all the other shops prices were 104.00 per battery. This is not the first time that I have found out that the Hyperma mall is over pricing their items, and also other shops in our area have better fruit, vegetables, and meat at better prices, the manager complains that they are losing customers to other shops in this area. I wonder why????????