We have had more new players entering the game since "The Shattering" and the start of Cataclysm. Some of those players do not yet really understanding the mechanics of gold making and selling on the Auction House. People selling world drops for cheap on the Auciton House has led me to pick up a few hot gold makers.
I am going to put a few images up, the quality isn't too good as I didn't have much time today to edit the pictures. A green box is what the current going rate is or what I have sold them for and a red box is what I purchased the item(s) for or what todays minimum buyout is.
The following image contains 9 blue items from todays Auction House scan:
As you can see, nice items for very little gold. If you are starting out on your flipping career then these are brilliant items to test the water with.
The next image is of some rarer items I have already flipped. You have to be lucky to get some of these for those prices but they are available.
There are alot of bargains out there to be had. As I mentioned, with new players coming into the game the world drops appear on the Auction House frequently for very little gold. If you utilize the "resale" scan function on Auctioneer or another addon you use then you could pocket some easy coin.
If you are looking for a list of items which should be in your snatch list then I suggest checking out Items you should have on your Snatch list over at The Consortium Forums.
The Auction House is by far and away the fastest and easiest way to make gold if used correctly.