Build PC to bot 15 $800
15 D3s $900
Avg 300kgph (low balling it) x 15 = 4.5 mil/hr = 108m GPD X $1.5 = $162/d
Internet $50/m
Cost to run PC 24/7 $100/m (if that)
Monthly income after expenses = $4,710/m = $56,520/y
Ya its worth it if you can sell what you make everyday. Just don't spend it all because when the IRS comes knocking you will have to pay that bill

Paypal reports all accounts that make over $20,000 a year or have over 200 transactions to the IRS.
After taxes = $39,000 give or take.
Keep in mind this is ONE PC overclocked to 4.4ghz. CPU would be AMD FX 8150 8 Core, 32GBs of ram a decent Video Card, 150+ GB SSD 15 diablos is 120GBs
IF gold prices stick above $1 and you can unload 200-300m gold per day I may setup a few.