mp

/M P/
noun
  1. 1

    The price at which a product, financial instrument, service or other tradable item can be bought and sold at an open market; the going price.

  2. 2

    On restaurant menus, used to mean the price charged depends on the price of supplies, which may vary.

Source: https://en.wiktionary.org/wiki/market%20price, https://en.wiktionary.org/wiki/mp