Opera store looks like a scam to me. I have several games there and the downloads the store is showing are not reflected in my statistics. Meaning that I have around 80 downloads for a game according the the dashboard but my statistics are saying only 4 users played my game.
I just went to Mobango’s site and I thought it said $0.05, but then looked again and it is $0.03. This is a great price. I was really excited about this and then I had an epiphany- these downloads are from Mobango, Not the Google’s Play store. Therefore they won’t help in your rankings in the Play store.
Although more downloads are good, I was looking for something cheaper than $0.20 per download from the Play store to help with rankings.