Auctioneer

Tips

On the Post Auctions tab there is a UIRefresh button. Next to that it tells you how old your scan is for whatever item you're trying to post. Let's say you are selling Adamantite Ore. If you did a scan that picked up Adamantite Ore prices 4 hours ago, it'll tell you...if it's greater than 24 hours it just says that. Anyway, by dragging Adamantite Ore up into your sale window and then hitting the UIRefresh button, it will do a mini Auctioneer scan just of Adamantite Ore. This is a great way to 'refresh' the average values for what is current. Drag the ore AGAIN into the sale window after the refresh is done and if you're using Auctioneer prices it will change to reflect that.

Keep the math simple

If you're selling things in stacks bigger than one, make your pricing easily divisible into a nice round number. A stack of 17 items for 2g, 31s makes it difficult to figure out unit price in their head (13s 58c each). Instead, break the stack into 10, 5, and 2, listing it for 20s each (2g, 1g, and 40s). Sometimes you can make MORE this way just because it's easier to calculate than other listings out there.

Miscellaneous Auctioning Tips:

ALWAYS put a Buyout Price. Period. Some people bid, but most people who come to the AH want their goodies right now!
Always list an item for 24hours. The price difference for listing is negligible, and you get it back anyway if it sells. But keep in mind that many people from different time zones play on your server. Don’t restrict your audience by using a short listing.
Consider a monopoly. If when you go to list the items, there’s only a handful of the same type of item out there, think about buying out all your competition and setting a higher price. People who want an item for their profession, or quest, or whatever, usually want it right then and there, and will pay whatever (within reason) for it, especially if it’s the only one available.
Don’t list if competition is high. I sell Essence of Water for over 15g each. If I go to list one and there’s a bunch of EoWs for 9g, and a handful for 10g, I’ll wait and list it later, when there’s only about 5 EoWs total. Then I’ll list it for 15g, even if there’s a 9 or 10g out there, because they’ll get bought out and someone will be stuck with mine.
Remember….prices in Auctioneer are for prices LISTED. If an item is listed at 1000g, over and over again, and it doesn’t sell, you might see the average price for it as 1000g. That doesn’t mean that it’s worth it. Use common sense…a level 19 item will not sell for 30g…level 19s usually don’t HAVE 30g, ever. (unless they read this guide!)
BE CAREFUL when searching for good deals. Make sure you have enough data to support the listed prices. Even then, use caution. I have found that certain items tend to be ‘over listed’. For example, my auctioneer data on some patterns or recipes has them worth 30g because of the averages for how they are listed. When I look at the actual auctions, there’s 15 of the same recipe, some for 1g50s, some for 100g. I think some people are either nuts or they are intentionally trying to mess with people using auctioneering.
Bid on Tuesday mornings, before the server goes down. The clock keeps running on the auctions, but less people are likely to out-bid you!
When searching for good deals, consider the ‘splitting a big stack’ strategy found in the General section.