There's a variety of reasons: - Lower-quality components (especially capacitors) being used to meet the lower price point. This is by far the most common failu

There's a variety of reasons: - Lower-quality components (especially capacitors) being used to meet the lower price point. This is by far the most common failure mode I have experienced, it's never the LEDs dying but the power supply. - Higher-quality LED light is usually result of driving the LEDs harder, causing them to fail earlier. - Probably some other reasons too.