Industry WIKI

A loss leader (also leader) is a product sold at a price below its minimum profit margin to stimulate other sales of more profitable goods or services. The use of a loss leader is a pricing strategy, a sales promotion strategy, and a marketing strategy. The loss leader is offered at a price below its minimum profit margin, not necessarily below cost.

A service mark or servicemark is a trademark used in the United States and several other countries to identify a service rather than a product.