Mark-up

definition:

the dollar markup, expressed as a percentage of the cost price. This is the money that a selling company adds to the cost of a product or service in order to produce a required level of profit. Strictly speaking, percentage mark-up refers to the difference between cost and selling price as a factor of the cost, not of the selling price. So a product costing $1 and selling for $2 has been given a mark-up of 100%; (at the same time it produces a Gross Profit of 50%).