What type of price reduction can include promotions like "buy one, get one free"?

The type of price reduction that can include promotions like "buy one, get one free" is best categorized as a deal. Deals typically focus on short-term incentives to encourage immediate purchases, often resulting in a sense of urgency for consumers to take advantage of the promotion.

"Buy one, get one free" is specifically designed to stimulate sales by providing added value to the customer. This kind of promotion does not just discount the price but enhances the perceived value of the purchase, making it an enticing offer for consumers to buy more.

While discounts and sales may lower the price of items, they do not capture the full essence of promotional deals where additional products or unique purchasing conditions are involved. An offer can refer to various types of promotions, but it is less specific than the term "deal," which directly communicates an action-oriented incentive for the consumer.