Two products with substantially different prices may be in the same market if consumers make a price-quality trade off.
如果消费者对商品的价格和质量做充分考虑，那么在一个市场中可能存在价格相差很多的同种商品。
Two products with substantially different prices may be in the same market if consumers make a price-quality trade off.
如果消费者对商品的价格和质量做充分考虑，那么在一个市场中可能存在价格相差很多的同种商品。
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