Yeah, I have been working on my trades as well seeing that I am waiting for Otter and Gris to catch up. I'm at lvl 24 and finished my life quest of getting the swweeeettt 2h mace that rocks. I am over 125 for blacksmithing but my mining is still just under the magic 125 level for expert mining. I have been tempted to start selling my good stuff on the auction, just not sure its worth the time or trouble, is the price difference all that different between what a vendor will buy it for and what the auction house will set it for? I know there will be bidding but what is the delta between vendor and auction house price? Don't know, I'll have to play and figure that out.
I find it varies widely, some items you would think to sell well don't, and vice versa. I nailed the 125 mark by failing 3 times in a row on an iron deposit and finally getting one out of it Up to 170 engineering, and boy, is it slow going and expensive from here on out.