Merchanting Tip, steel barz

Ok, well to start off steel bars are 550 each when you sell them. Coal is about 150 each. Iron is 50 each. So, if you buy say 1k coal for 150k, and 500 iron for 25k, then you just spent 175k. Then, smelt those ores into 500 steel bars. Then go and sell them for 550 each. So 500 steel bars at 550 each is 275. And there you have it, a nice 125k profit. Also it gives you a bit of smithing exp.