Actually i think 6-13 isnt going sell that good, when somebody starts an alt priority is to lvl quick and fast untill desired lvl is reached for twinking or just plain making a new main.
lvl 1 - (+-)19 is a quick obstacle everybody must get pass it after that you are going to look for gear (if it isnt dropped already along the way getting here)
eg. i started a druid, lvl 11 got me on darkshore with gear dropped from killing or sold by vendors, i simply foccused my efforts on lvlling, FP's, where to find quest items etc etc. Looking for gear on AH for example isnt needed untill you seriously thinking about PvP or you come in an area where things getting more rough. Before that its a waste of time and money because the next hours you play you'll prop. lvl up 5+ times unlocking new gear possibilities/.
At least this is my experience so dont flame me.
edit: disenchanting is the best option for these items i guess, if you dont have it, maken an alt who does..
Edited, Feb 7th 2007 5:53am by ChlKilt