The real cost comes from when they're on for too long, generating a lot of sustained heat, or when the DC power supply stops working. Would love for PoE-based lights to take off for residential use but that's probably a pipe dream.
Yea the only issue I have with led is some are really finicky with frequency changes. The ones in my kitchen will flicker when the power wall is full. I haven’t gotten around to asking Tesla to adjust the frequency though.