Storm City or the Warriors Hall in Orgrimmar, where pvp equipment is sold, you can ask the guards.

PVP equipment can be purchased directly with honor in NPC before reaching the full level (arena score level is not required), but honor points is required.

From the left, 1 NPC Hayden Christofan can buy battlefield equipment of honor, No.2 NPC Rukan Mallory can buy conquest equipment, and No.3 and No.4 NPCs need high ratings to get equipment.