ценовая надбавка(an increase in the price of something, especially from the price a shop pays for something to the price it sells it for: The retailer’s mark-up is 50%. LDOCE. The usual mark-up on clothes is about 20 percent. CALD. And that the mark-up over libor – which is 5.75 per cent at the moment – is 2.25 per cent, amounting to a rate of interest of 8 per cent. BUSINESS TODAY (1996). Collins Alexander Demidov)