The safest and only Blizzard-approved way to use real-world money to acquire high-level gear is by purchasing a via the in-game shop, selling it on the Auction House for massive amounts of gold, and using that gold to buy gear.
You will find countless websites offering to sell you "WoW Gear Boosts" or gold for real cash. Engaging with these services involves severe risks: buy wow gear
: Earned through Battlegrounds and Arenas. You use these at PvP vendors to buy guaranteed, high-level player-versus-player armor and weapons. The safest and only Blizzard-approved way to use
Are you currently playing the expansion or a version of WoW Classic so I can give you the exact vendor locations and currency names? You use these at PvP vendors to buy
If you prefer playing the game to earn your gear instead of swiping a credit card, WoW offers several specialized currencies that allow you to targetedly purchase equipment.
: Top-tier raiding guilds frequently list high-item-level armor and weapons on the Auction House.