Industry WIKI

Free of charge, at no charge, at no cost, complimentary, gratis, and the like are phrases or terms used to indicate that a thing for which a monetary cost is normally assessed is being provided without any payment being required.

Markup (or price spread) is the difference between the selling price of a good or service and its marginal cost. In economics, markups are the most direct way to measure market power: the extent to which a firm can influence the price at which it sells a product or service. A markup rule is the pricing practice of a producer with market power, where a firm charges a fixed mark-up over it