World's most expensive red LED

While hacking 60W lightbulbs is a cheap way to get bright white light, 100W RGB lightbulbs are absolutely a waste of money for making colored light. The rated brightness on these is for white light only. The colored light is a different mode & uses a small number of dimmer RGB leds on 13V. The white LEDs run on 140V & can't be ground down to run on 12V. The 2 sets of LEDs aren't used simultaneously. The cheapest way to get colored light is the good old snail mailed COB.

https://www.amazon.com/Chanzon-Inten...01DBZJZ7E?th=1