: Defeating bosses like Lotus and Damien rewards you with coins (e.g., Extraordinary Energy Cores) that you exchange at specialized NPCs for Absolab gear.
: While not an official shop, some players offer "carries" through hard bosses in exchange for Mesos or other services, allowing you to "buy" a chance at high-level loot drops. Key Equipment Sources & Shops Gear Progression Guide | Simplified | MapleStory Global buy maplestory equips
: A safe, legal way to trade NEXON Cash (NX) for Mesos, which you can then use to buy equipment on the Auction House. "Buying" in Heroic (Reboot) Worlds : Defeating bosses like Lotus and Damien rewards