Here is how much Gp you can make an hour by smithing Rune 2h's in Varrock anvil.
Profit calculation:
Rune bars: 2444 = 30,305,600 Gp
I made: 736 Rune 2h that sold: 27,859,072 Gp minus left over Rune bars: 236 = 2,926,400 Gp is 27,379,200 Gp.
So 27,859,072 Gp minus 27,379,200 = Profit: 479,872 Gp / h.