With the release of the RMAH, I feel I won't need this anymore. So here is how I made my gold for the last few weeks.
Buy low sell high. But of course, you are going to ask, what should I buy and when do I know if it's under priced? All I can say is, spend the next week just looking at the prices of items, sort them by buyout and look for gaps between two items that give the same stats (make sure that you make at least 15% profit).
So let's say there is a belt that gives 22% magic find at 121k and there is another one at 161k with the same stats. If there is no item between them, just buy out the belt at 121k and put it at 159k. There you go, you just made 38k (minus 15% of course..)
The items I've been looking for are:
Gold find armor (18+) OR AND
Magic find armor (18+)
If you don't find anything worth it at 18, increase the gold find value until you find something decent.
Here are the max values of MF for each item.. always start with 18 (except for rings, amulet, helm, and cloak) and then keep going up until you reach the max value. You will be amazed at how much people under price items.
Item type Maximum magic find without socket Notes Amulet 40 Belt 20 Boots 20 Bracers 20 Chest 20 Gloves 20 Helm 20 +31 radiant star topaz with max 51 Pants 20 Ring 18 Shoulders 20 Shield 20 Mojo (Witch Doctor) 18 Quiver (Demon Hunter) 18 Source (Wizard) 18 Cloak (Demon Hunter) 18 Mighty Belt (Barbarian) 18 Spirit Stone (Monk) 18 +31 radiant star topaz max 49 Voodoo Mask (Witch Doctor) 18 +31 radiant star topaz max 49 Wizard hat (Wizard) 18 +31 radiant star topaz max 49
Now for the maximum gold find value (Reselling gold find has been a very good source of income for me, but with the introduction of the RMAH, I think the price will drop hard. Be careful.
Item type Maximum gold find without socket Notes Amulet 40 Belt 25 Boots 25 Bracers 20 Chest 25 Gloves 25 Helm 25 +31 radiant star emerald with max 56 Pants 25 Ring 20 Shoulders 25 Shield 25 Mojo (Witch Doctor) 20 Quiver (Demon Hunter) 20 Source (Wizard) 20 Cloak (Demon Hunter) 20 Mighty Belt (Barbarian) 20 Spirit Stone (Monk) 20 +31 radiant star emerald max 51 Voodoo Mask (Witch Doctor) 20 +31 radiant star emerald max 51 Wizard hat (Wizard) 20 +31 radiant star emerald max 51
Please don't share this with too many people...