When was the last time you actually priced them out?

When they first came up they were pricy but unless you're talking about fancy smart-bulbs with Wifi and color changing, they are not 10x the price. And they empirically last 5-20+ times longer.

So even before you consider that a huge portion of the energy put into incandescence is lost to heat (thereby making it cost MUCH more in electricity), they are still roughly the same price after accounting for lifespan.