3 for 2

This is a popular promotion where the customer buys three products of a certain criteria and get one, often the cheapest for free.

1. Select what products should be eligible for the promotion by either setting requirements by category, manufacturer flag or other criteria. In the case below we filter using flags
2. Set the requirement. In our example we want to give away the cheapest for free in a certain category but of course you can use flags, manufacturers etc.