The most simple thing is TradeSkillMaster. This AddOn shows you quite an amount of information in the items tooltip. In my opinion, DBRegionMarketAvg the best source. It tells me the price, an item was posted on all EU realms in the last 14 days. Why not DBMarket? DBMarket only shows you the items value from your server in the last 14 days. This value often gets manipulated. Some people start to post an item with a 500g value for 500.000 Gold on the auction house for several weaks. As a consequence, DBMarket is rising towards 500.000 Gold. If you use DBMarket with 100% and post your item for 500.000 Gold, nobody will buy it.
This spot actually kicks BOOTAY. And I only say that because it's so hidden, unique and quirky that I had to add it to this list, despite it being a method rather than a farm. Generally what you want to do is some sneaky arbitrage. We'll be buying the items Royal olive, Dalapeno Pepper, River onion, and Muskenbutter from the vendor for 2g – and reselling them to the AH for 4g+. This is an awesome way to take advantage of players laziness and the demanding reagent requirements for some of the higher end recipes. By selling from the vendor to AH, you can make easy gold – in fact I suspect most cooks do not know these reagents can be purchased from NPC's.
Time Trials for MDI take place during a 72-hour window on the Tournament Realm. The first Time Trial window begins Saturday, March 23 at 7 a.m. PDT for MDI West (North America, Latin America, and Europe), and Saturday, March 30 at 7 a.m. CST for MDI East (China, South Korea, Southeast Asia, Taiwan and Australia/New Zealand). When this time window begins, players on the tournament realm will receive a quest with three Blizzard account-bound keystones from this Turnip, found in Hook Point (Alliance) or Mugambala (Horde).
Although the Battle Pet Trainer will only offer to teach you your race-specific companion, it is possible to add all of these pets to your collection. You can either find them in your faction’s auction house or you can create a character of the race whose pet you would like to learn. Using your new character, you can seek out any battle pet trainer in major cities. After you learn the pet, you can delete the character; the pet you learned will not be removed from your collection.