one bot running 23/7 one hour break for system restt and cooldown. Brace yourself's math incoming. if you make 500g/h times 30 days = 500*23*30 = 345000 gold for one account in a month at 23 hours /day at a price of 20 cents or 0.2 dollars /thousand, you can make 69 dollars or at 0.3 you can make 120 dollars. using just one bot. Being a highschool student and spending most of my time doing homework 120 dollars per month sounds pretty good.
I see a lot of people only making 20 days, and you need to factor in setup time even if you get Vms or whatever down quick it still takes man hours to setup (plus if HB/HBRelog crashes or whatever).