Setting a very low price on one product can bring in new customers. This is a great strategy to promote one particular product. You can also select a product you know you have a higher margin on and can give away a bigger discount on, to bring in traffic. Often customers who are placing an order, encouraged by the offer, may buy other products as well. The flagship product at a lower price is not only a great way to sell out that product but also to attract more visitors and more sales in general. This is also a great strategy for selling out slow-moving products or older product versions.