Leather serves rogues, druids, monks, and demon hunters, and leveling leather often outprices equivalent mail because more alts want it.
Leather (Armor)
Auction-house prices and price history for Leather in TBC Classic.
1,109 items in Armor › Leather are currently auctionable in Burning Crusade Classic.
Prices refresh hourly from TradeSkillMaster (TSM).
Leather listings link to price-history pages with per-realm buyout, average, and median data for Burning Crusade Classic.