Is LEGO Investing Still Worth It in 2026? Retired Sets, Real Resale Math, and the Themes That Actually Pay Off
Quick answer: Retired LEGO sets can appreciate, but not evenly. Modular Buildings and licensed UCS sets have the strongest track record. Standard City and Technic sets mostly just sit flat. A university study on 2,300+ sets found average yearly gains near 11%, though that number hides huge variation between themes. Selling fees, storage, and years…
