Also referred to as "Buy One, Get One Free" are defined by a discount applied to a total purchase based on an order that meets the minimum number of products required for that discount. The discount always applies to the product(s) of lesser value. The customer will pay full price for the first product and a then receive a second product of lesser or equal value free of charge when the discount is applied. Where 4 or more products are purchased, the discount will apply to the least expensive products ordered.