Indicator of a half-price deal, in effect

BOGO

Think of a retail abbreviation where you get two items but only pay for one—often seen on store signs.

BOGO" stands for "buy one, get one," which is a common retail promotion where you pay for one item and get another free—essentially a half-price deal. The clue hints at this with "indicator of a half-price deal," while "in effect" suggests the abbreviation is actively used in real-world sales. The wordplay is straightforward: the answer is the shorthand term for the exact deal described.