I used to earn over 100 usd per photo sale on 500px. Since they started licensing through Getty I get pennies. Litterally. Just a few days ago one of my photos got licensed where I received less than 1 usd in fees. I went to check on Getty's website and saw the cheapest you could license it from there was 50 usd. Talk about greed and getting screwed. I'm removing all my photos from 500px within a month.