You can use a gaming desktop to mine and get some money by the end of the month. I'm using nicehash and getting around 100 USD month with a 1060 (after electricity costs) - and I just mine when my PC is idle. It's not get rich money, but it's enough to pay some bills.
That is really interesting. Just earning $100 for one gaming desktop can already be good enough for me. Yeah, the whole idea is to earn money from mining primarily to pay the bill including electric, water and of course the internet connection. I am intrigue...may I know from what country are you based?