If possible, avoid purchasing Gear from the Auction House - Ideally, you should be able to achieve level 60 without buying anything from the Auction House. This way you will save Gold, but possibly make leveling a bit harder for yourself. If you badly require an Item upgrade, and the suitable Item is available on the Auction House for a low enough price - buy it, but only if you think that the investment will pay for itself in one way or another (the main exceptions to the Auction House ban Rule are Weapons and Wands, as they make leveling much faster, and pay for themselves by allowing you to chain-kill more mobs without Eating and Drinking, which saves Gold and time).
As you level, you will buy new ranks of spells. If you splurge out on an item upgrade, you will not have enough gold readily available to upgrade to the latest ranks of spells: placing you behind. Moreover, you can buy gear upgrades from the Auction House (AH) or vendors. Furthermore, you may have large investments that need to be paid for professors. You will need to purchase reagents and items such as leather, bolts of cloth, alchemy supplies – unless you have a charitable friend or another high-level alt.
For WOW players who loved Vanilla WOW so much, the released date for WOW Classic has finally been confirmed and it will be launched on August 27, 2019! WOW classic gold & WOW gold classic are expected to have very high demand when the game is launched, WOW players are recommended to buy WOW classic gold or WOW gold classic from G2G.com and enjoy the cheapest price! For more info about the launch and testing schedule for WOW classic, kindly visit the official site here : https://worldofwarcraft.com/en-us/news/22990080/mark-your-calendars-wow-classic-launch-and-testing-schedule