* This is how the FTC defines price discrimination:

A seller charging competing buyers different prices for the same “commodity” or discriminating in the provision of “allowances”—compensation for advertising and other services—may be violating the Robinson-Patman Act. This kind of price discrimination may hurt competition by giving favored customers an edge in the market that has nothing to do with the superior efficiency of those customers....Price discrimination also might be used as a predatory pricing tactic—setting prices below cost to certain customers—to harm competition at the supplier’s level.

Source: www.ftc.gov

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