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In: Economics

There are two supermarkets. Supermarket A and Supermarket B are exactly the same prices on online....

There are two supermarkets. Supermarket A and Supermarket B are exactly the same prices on online. However, the prices of the two supermarkets in the stores are not the same as those on the Internet. Why the supermarket can not unify the price? In addition, why the supermarket does not use the price as the main competition? Use the economics of economics to explain this phenomenon.

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