Definition

The purpose of B2G2 is to incentivize you to purchase more items from the store, which may have an excess of a particular item and is looking to offload it from its inventory. The promotion also appeals to consumers by leveraging the psychology of getting something for free, making it feel like a better deal than standard discounts. B2G2 is one of severalBOGO-typeacronyms, with others includingB1G1andB2G1.

Origin

slang.net