Landing is a cool solution if you want to present or promote the specific service or product, get contact information in exchange for a good offer. As such, landing is aimed to perform one specific action for the particular product or service.
Therefore, landing is not suitable for you if you want to sell a lot for high prices. To satisfy your need you’ll have to get the full-fledged site!
However, if you do not have your own site yet, then with the help of the landing page you may start collecting contacts database, start selling several products or services and, in general, declare about yourself in the Internet.