You can often search the AH for gear but find absolutely nothing in huge areas.
I'm sorry, but there doesn't seem to be much trade going on in the auction house. Often times, it is easier to sell a green to a vendor than to bother auctioning it. Why? Because the time you're spending pointing and clicking and calculating prices could have been better spent just farming and selling to an NPC, then having to deal with any unsold items that come back in the mailbox. The auction prices were recently cut, which was a relief, but they still feel a little bit high.
You can often search the AH for gear but find absolutely nothing in huge areas. For instance, on Emberlord right now, there is not 1 piece of level 20 - 29 plate chest or waist gear, and the other areas are mostly filled with world drops that they want to auction instead of salvaging for a hope of profit. People are simply salvaging their gear so that they don't have to do a lot of mass clicking and reposting of their goods.
I hate comparing this game to WoW, but it had such a great economy. You knew what you would want to pay for such and such item, you could batch post mass quantities (with the right addons and configuration), etc. I really enjoyed playing the market in WoW, and was always full of coin because of it.
Anyway, I feel like the AH system could use some tweaking so that we can start actually posting our wares.