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by lotsofpulp 1958 days ago
> Is a Mercedes E-class different from Toyota Camry?

For this example, obviously they are different. The job of marketing is to justify the difference in price for whatever differences the Mercedes offers.

> Is economy class 21-day advance, Saturday night stay required travel different from a walk-up ticket out Tuesday back the same Thursday?

Yes, for the seller, guaranteed payment 21 days before is different than a volatile payment minutes before the goods expire.