There is no sensible way to explore/discover existing content hence the insane drop in sales after featuring. No usage of rating, no tags, no sorting. Also current search is extremely basic and looking only for exact phrase and nothing more.
It is exactly the worst user experience I had on any marketplace. If I want to find cool sci-fi asset on Unity store I open the store, choose price range, minimal rating and recently updated assets with sci-fi tag, then I sort by popularity or rating.
On UE4 Marketplace you have to brute force this wall of assets you don’t interested in before you find what you want =/