The price of it all made no difference.

VOA: special.2009.09.05

Let's say this is a repurchase of some of your shares at market price, sending the same check, so what's the difference?

就说我们以市价购回你的一些股票,然后寄过去同一张支票,这有区别吗

耶鲁公开课 - 金融市场课程节选

Their price has remained stable. "The main difference I have seen is people are moving from 22 carat gold jewelry to diamond jewelry, maybe what they say is true is diamonds are forever, and diamonds always is a lady's best friend,".

VOA: standard.2009.10.17

To me, the difference in price is not enough to justify the difference in quality.

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All this explains some of the difference in price, but not all of it.

ECONOMIST: Profit stream

Rather than just a store-to-store or neighborhood-to-neighborhood difference in price, this discrimination can happen within the same store.

FORBES: Individualized Coupons Aid Price Discrimination