Agreement between a group of parties typically on the same side of a transaction to charge the same prices, e.g., vendors agreeing to charge no less than the same minimum price for comparable goods or purchasers agreeing not to pay more than the same maximum price for comparable goods (sometimes camouflaged by insignificant differences on slightly different goods); almost always illegal under antitrust, competition, or unfair trade/competition laws. Price-fixing is often a crime, for which any business executives involved may go to prison (for example in the United States).