A very popular pricing strategy, price bundling, is to group similar or complementary products and to charge a total price that is lower if they were sold separately. Comcast, Direct TV, and Telstra all follow this strategy by combining different products and services for a set price. Customers assume that these computer experts are putting together an effective product package and they are paying less. The underlying assumption of this pricing strategy is that the increased sales generated will more than compensate for a lower profit margin. It may also be a way of selling a less popular product by combining it with popular ones. Clearly, industries such as financial services and telecommunications are big users of this.