I will get back to you on the exact returns however based on online calculators I should get between $350 - $450 US per month in value which in time can also appreciate of course dependant on the success of my chosen coins. I will do an update once I have it all running and pull in my first month of returns. This rig cost with 6 x GPU - $3500AUD which is pretty good. 10 months for a return on investment minimum minus 'possible' appreciation of all tokens mined. Long term plan.