The last farm on this list, actually I was surprised this farm eluded me for so long. Generally speaking gnomergan is a huge confusing instance that takes some getting used to but if your a high value transmog farmer this does not scare you. You can pull the entire instance and get access to a plethora of high value loot such a recipes, world drops, greens and even engineer supplies. Overall this farm is shadowed by the Diremaul farm and Zulfarrak farm, but is an equal change of scenery with a wild card if you get the hot shot pilots gloves OR the mechbuilders overalls worth 400,000g and 60,000g respectively. A pretty cool neat farm that noone really mentioned until now.
Whatever your approach, if you use some common sense and apply yourself, you can make significant quantities of money in the game. By managing your cashflow, conserving and budgeting where you can, and investing wisely in those activities that make you money, you can become financially solvent relatively early in your career, and remain comfortably well-off (while still buying good gear) at level 80. Good luck!
Potions serve more utilitarian purposes, and it's up to you to decide whether to make use of them. The most common is the Swiftness Potion, which can provide you a handy boost in speed while going after annoying quest objectives indoors. These are generally MASSIVELY overpriced, because people know how useful they are. I opted not to spend the gold since Warriors are already fairly mobile, but slower classes may benefit greatly from these.
Beyond that the constant amounts of RNG on top of RNG has made the game not only frustrating but unfun and unrewarding. It is clear with the current game design decisions the goal of bfa was not to create an exciting experience and to refresh world pvp and faction pride, but to test the player base and see how long subscriptions could be pushed with the least amount of content. Class specific raid gear, tier sets, removal of any sort permanent player progression and a complete draining of class skills has left BFA with less and forced players to grind more only with the knowledge that like Legion all your work at the end of the day will be worth nothing due to end game catch up mechanics and removal of the azerite necklace at the end of the expansion.
To use it as an auctioneer, send all your auctionable items from your alts to your bank alt, and organize all your auctions from this character. This saves your time spent on auction house management, focuses all your income to one character and allows for easier overview of your cash flow. Consider using an alt management addon to be able to access all information about your alts from your bank character. One such addon is Altoholic
Congratulations on reaching Level 120! Now that you have hit Level 120 we recommend looking at our Easy mode page and Talents section to learn how to play at max level. To get yourself prepared for the end-game content ahead, we strongly recommend this Battle for Azeroth Raiding Lexicon/Spreadsheet by Medivh. It is a gold trove of information that will help you when gearing up in Battle for Azeroth and more.
ElvUI is a complete replacement for the default User Interface. Not only is this a popular AddOn among top players, but we here at Icy Veins use it for all our characters. ElvUI eliminates most of the inefficiencies of the Blizzard interface, which are many and varied. It is extremely user friendly, and takes very little time to set up and master. It also comes already furnished with almost everything you need; unit frames, raid frames, minimap, buffs and debuffs, and much more. You can easily unlock and drag all the components around so your UI will look exactly the way you want it to. ElvUI is clean, easy to use, and a great starting point for your UI.
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.