The list price refers to the Manufacturer's Suggested Retail Price (MSRP). This is the price at which the manufacturer recommends that the retailer sells the product at. 

We make every effort to maintain up-to-date publisher list prices. However, despite our best efforts, we cannot guarantee their accuracy since these prices may change over time without notice. As a result, the price printed on the book may not correspond to the current price set by the publisher, depending on when the books were received. The list price shown is the publisher's suggested retail price, and actual selling prices may vary by retailer.