Looks useful. Cost?
LEDs generally last 50,000 hours, it is usually the driver, not the LED that goes, and they are reliable. I’ve only had one LED light stop working over many years of using lights for cross country running, it needed a new driver, the LED was fine.
Incidentally, I assume it takes batteries. I recommend rechargeable Low Self Discharge NiMH ones. They keep their charge for years, not months as with other NiMH cells. The best are Japanese made such as Eneloop, and some Amazon Basics! 7dayshop is a good source for cheap batteries.