Still lvl 20 and not a single XP more than yesterday. But lot of business done. I sold all my bronze. I barely could create enough. Bought up all the copper and tin from the AH.
I also found a good method for finding bargains. Since the AH sort on server side, if you sort by time, you get the 30 min, than 2 hour items first. Than you sort the page by percentage and you found all the items that worth bidding and has low time left, so it's likely not be overbid. With this method I could buy up lot of armor and weapons for disenchanting. Sold out the materials.
By the end of the day I had 240G. Not bad from a lvl 20.