The Argent Tournament was released in patch 3.2. With is came loads of dailies and ways to make money.
First go to the Silver Convenant, or Sunreaver Tent and pick up the quest to be come an aspirant. Complete the following quests to become a Valiant, and finally a champion.
Here's where the gold starts.After becoming a champion you can be come an aspirant of another race of your faction. Once you have reached this step, you'll have around 12 quests to do a day. In about maybe half an hour, depending on how fast you kill stuff, these dailies will give you about 200 gold.
Rinse and repeat. However, you also receive Champion's Seals for completing the champion quests. You can use these to buy the 40 Champion's Seals companions. Champion's Seals can also be obtained from bosses in Heroic Trial of the Champion.
These companions can see for upwards of 1000g, at least on my server. They are especially valued by people of the opposing faction. Post on the Neutral Auction House for the most profit.
My first post, I don't think it's a repost, thanks for reading