Just a tip, and totally logical, but here goes:
(Might have been posted before, is so, my appologies)
On my server Netherweave goes for +/- 3G a stack on AH.
Salesprice on vendor is 1G 60s, however if you make em into Heavy Netherweave Bandages, 10 of these, which corresponds to 1 stack sells for 3G.
Thus you will sell instantly for same value without the standard AH charge. Only time consuming bit is making bandages, but that is something I normally start when I have to go AFK for a few minutes.
If ya have any better ways of making profit on cloth without being a tailor, give some hints please :-)
...paboee...