Fourteen-year-old Kai steps into the legendary Trade Winds Bazaar with fourteen silver tokens and a head full of dreams. As he wanders wind-blown stalls offering compasses, chimes, sweets, and scrolls, Kai grapples with opportunity cost—every token spent means another treasure forgone. Between haggling lessons, mystery auctions, and generous acts, he discovers the power of weighing benefits, balancing priorities, and making choices aligned with long-term goals. Set against a vibrant seaside marketplace, Opportunity Cost Odyssey transforms economic concepts into a fun, adventurous tale that equips young readers with decision-making frameworks they’ll carry beyond the bazaar’s bustling stalls.