I bought a light bulb. It goes in my kitchen ceiling, to replace a 65 watt down spot. The box says it will last 35 thousand hours (which is about four years). They talk about 20 years. Though it only has a 3 year limited warranty. These things cost fifty bucks. Usually, Though i got mine on sale. Rumor is that involves a subsidy by the local utility. At the sale price, my calculations indicate it’s payback is about three years. Of course maybe I’ll just leave the lights on more.
I’m amused by the amount of packaging this bulb enjoyed. I guess if you spend fifty bucks for this thing you’d expect precious packaging. The circles on that carpet are about a foot across.