retail mark-up UK US noun [C] (also mark-up) COMMERCE
► the amount by which a store increases the price of a product above what it cost to make it, before selling it to its customers. Retail mark-up is usually expressed as a percentage of the wholesale price: the retail mark-up on/for sth »
What is the standard retail mark-up for designer jewelry?
at a retail mark-up of sth »They sell the bikes at a retail mark-up of 38%.
Financial and business terms. 2012.