Costco is famous for its generous "Risk-Free 100% Satisfaction Guarantee," which allows you to return most items at any time. However, to prevent abuse of the system, electronics fall into a special category with a much tighter deadline. MOJO Costco's return policy is more generous than most retailers, but it has real limits: a 90-day window for electronics, state-specific rules for alcohol, and tighter enforcement in 2025-2026. EcoEnclose The Costco return policy is simultan