A group of Northern Democrats who were against the American Civil War were called the Copperheads. They were the ones who wanted to prevent the independence of American slaves. The name came from copper liberty-head coins that they wore as badges.
The correct answer should be reward. In order to reward buyers for buying, you put the prices lower even though in reality you could be making the same mount of money. You thus decide to earn less money but you reward your buyers for being loyal or you get them to buy.
Political realism is the policy that your looking for