kids these days..provide arguments, figures or stfu
30m per day/average is both items + gold picked up by bots . 50-60e for electricity is very real if u run multiple computers and/or go 24/7 now u can't extract exactly the electricity but if that seems a lot fine but you will probably not go lower then 40e.
There aren't more lucrative ways

. the price for good items in both gah and rmah is not random and generally they are the same ( according to blizzard's 0.25e/mil) .
Sure you can buy items from gah and sell on rmah but those don't sell unless you undercut retardedly which will get you close or to the 0.11 - 0.12 rate .