Kinder Joy’s Potter edition revived stagnant sales, earning ₹150 crore in India—Maharashtra ₹35 crore, Tamil Nadu ₹30 crore, UP ₹28 crore, Karnataka ₹25 crore, Bengal ₹20 crore. Nostalgia drew adults into the market, leading to stockouts on various e-commerce sites. Sentiment and scarcity drove demand, proving nostalgia's marketing power.