at mnewxcv](https://forums.unrealengine.com/member/3742615-mnewxcv),
yes you can use anything u get at the marketplace, no additional rolyalties beyond the 5%,
as a indie developer, this is actually a “good” route in my opinion, since an indie developer doesn’t have the resources to hire a art team to build your own art,
and I believe that’s one of the primary functions of the market place, to help indies get off the ground without having to invest heavily in generating art.
for instance, they released 20mill+ in paragon assets , and 10mill+ in infinity blade assets, both of which u can use fully, and which are fully covered by the 5% royalty.
aslong as everything u get from the market place stays in the unreal engine, you are good.
only thing you can “not” do is, take the unreal assets from the market place and use them in a unity based game or any other engine.