I am sharing the strategy that I have been using for a while now to make uber amounts of gold. This can be done at just about any level.

I chose to do this with [Wool Cloth] since it is one of the highest in demand. This all hit me when i had about 9 stacks of [Wool Cloth]. I was posting them for about 92s at first. I then searched for wool cloth on the [Auction House]. I seen that a lot of the stacks were going for around 95s-1gold. Yes it may vary pending on server. I then seen a lot of [Wool Cloth] going for 50s and up to 85s. So i bought all the cloth under 85s where as i could make easy profit by RE-LISTING it for 92s or so. I would check the AH every few hours to buy out any other person Wool that would beat my price. I did this for about 5 days straight. Since I was buying so much cloth at 50s to around 80s. I realized i should start listing it even cheeper. About 80s a pop. I at one time had 90 auction up all for Wool Cloth. There was about 7 or so that didnt sell. But the rest did. I started doing this when i only had 36gold. On a level 28 character. I in return now have 170gold. Plus my character is lvl 34 and has most of the best equipment on him.

Im sure the level 60's and such think its not that great of an idea. But to me it has made my life a lot easier.

P.S. The funny thing about this is. People are always looking what the best prices are going for and if they looted all that item from MOBS theyd ont really care they will list it for 20 silver under the low prices. In reality that was what made me the money. I love it when people think they are underselling me. But im the one buying their cloth and relisting it.
Oh ya a lot of people probably thinking ya no crap this is an easy idea. On my server I probably own 3/4 of the wool listings and have the best prices still. After i make 250 gold i will most likely stop since i dont want to let it get out of hand. Such as never being able to get out of the business do to how much i have invested into wool.

Good Luck Have fun.