Commercial-grade LED light strings, clips, timers, cords and the components behind an installed display.
This is not what is on a big box shelf in November. Commercial strings are built to be put up, taken down and stored for a decade, which is the only way a lighting program makes economic sense. We own the lights on our programs, we install them, we take them down and we store them, and the same set goes back up next year. Holiday lighting.