The S-Helper tab is an added feature of our American Flyer website. It's currently a limited number of cars that are brand new in excellent boxes. All cars are currently valued as presented in Greenberg's 2017 American Flyer Pocket Price Guide. We will continue to add additional pieces as they become available. If there is a specific car or three pack issue for which you are searching, contact us through this website. As you are aware, the new S-Gauge product will be manufactured by MTH. We are happy to add this new series of S-Helper to assist you in adding to your collection.