I know I can use all of the Epic content in commercial projects without problems, I can sell them in commercial projects etc.
But what if I sell not the game itself but the source files? I am asking because you say people should put a demo level with stuff they want to sell on the marketplace to show how to use it and I would like to put stuff from the kite demo in this demo level.
In the UE4 EULA is written
You may Distribute or sublicense Examples (including as modified by you under the License) in Source Code or object code format to any third party. However, the rights in this Section 1(c) do not expand or modify your limited Distribution and sublicensing rights for Engine Code and Content (including as modified by you under the License) that are not Examples.
So I am allowed to sublicense (sell) stuff from examples (kite demo) on the marketplace if the buyers have accepted the UE4 EULA, which is granted in case of the marketplace, correct?