Supply and demand have little to do with a seller’s decision to price an item at $19.99 instead of 20 bucks.

当商家觉得价格应该是19.99美元而不是20块时，供求关系并没有起到什么作用。

youdao

Let's go back to Econ 101: When you constrict the supply of an item and have constant or increasing demand, price must increase.

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