Hi there, welcome to the forums! 
Are you talking about Content Packs to be added into a game, or finished games?
The marketplace provides content that can be used to help build up a game. All of the current available stock is meant for developers looking to add in more content to their games.
If you are looking for finished games you can check out sites like Steam, no games will be sold from the forums here or on marketplace.
Hope that helps!