surprised that master_smither hasnt posted yet...he should have something to say. anyway, spend like 10mil and buy coal and iron and smelt and smith those bars. 180+180+100 = 460 gp per steel bars = 55smith xp. that is 9gp per xp. 1mil xp is 9mil gp. if you want to high alch, that is 300/5 = 60gp per steel bar 460+60 = 520gp per bar plus -1200/5 = -240gp per bar. so buy the ores, buy the nats, smelt and smith and high alch. that is 280gp per bar. 280/55 = 5 gp per smithing xp. for 1mil xp, you spend 5mil gp. for 13mil xp that is about 70mil gp. for 85 smithing you basically spend 16mil. for 70, spend about 3-4milgp.