A frequent sales offer is “buy one, get one free” or “two for the price of one.” According to economist Alex Tabarrok, the effectiveness of this offer is due to the fact that the pricing takes into account the fact that two things are being sold.
When used in conjunction with a buy one, get one free offer, the price of “one” is often raised. While the cost per item is lower than if purchased separately, it is not exactly half price.

The abbreviation BOGOF – or simply BOGO – is often used in the marketing sector to describe this method.

In 2014, when there was a lot of talk about food waste in the UK, two-for-one deals were criticized. Customers are more likely to pass the use-by date of items under such deals because many of the foods have limited shelf life.

Supermarkets have also been criticised for contributing to the obesity epidemic by offering buy one, get one free deals. The Norwich Business School at the University of East Anglia performed research on items used in buy one, get one free deals in 2012. These marketing, according to the findings, are directed at harmful items such as chocolate, candies, and soft beverages.

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