> Nearly all airline tickets seem to be sold at very different prices for exactly the same good. There's nothing illegal about the same product being sold at d

> Nearly all airline tickets seem to be sold at very different prices for exactly the same good. There's nothing illegal about the same product being sold at different prices at different times. Or at different prices from different retailers. Or about slightly different products being sold at wildly different prices (ticket allows changes or cancellations, for example). Airline ticket price variation is mostly due to those things, none of which is directly discriminatory in the sense of offering different prices to different people. Although they are all, to some extent, deliberate market segmentation (trying to encourage people with higher budgets to pay more).