Theres also another strategy which I tried with Light Leather.

Buying up all stacks on the marked, and slowly sell it off at a average price.

I don't remember the excact prices, but lets say the average and fair price was 10g.

When someone underbid me, I purchased it immediately. I ended up with alot of light leather in my bank lol, but I earned a lot of gc on it aswell.

Also, look out for seriously underpriced epic, rare blues, twink gear etc. You can really make a good profit there.

To be able to control a marked you need to a. have some start gc. b. be active on the ah and c. pick a product which is used alot.

What I expirenced was, that sometimes I diden't sell alot of light leather, but then suddently all my 30+ stacks got bought within a couple of hours earning me a good profit. I also placed a couple of stack on AH for 50% overpriced, so if someone bough all the average priced leather I still had some expensive to offer.

Got tired of the drill though and spend my time lvl my toons instead