Buy Extremely Low in AH
Whether you want to buy low, sell high, or you are looking for things to disenchant or herbs to mill, the way to make the most gold is of course to buy to ridiculously low prices in AH.
And thanks to noobs and this little trick, it’s possible.
Every week the server will be shut down for a shorter or longer periode. Ours is shot down Tuesday night, and I think it’s the same elsewhere.
The secret is to visit AH shortly before shutdown and bid on all the good stuff where the auctions will expire within 12 hours (preferably shorter).
You stand a large chance to get the things you bid at. I’ve gotten things that was worth 10 gold for only 30 silver.