yeah, but not that many years ago the little LED keychain flashlights were $15 and now they're a popular give-away.
That's because they fit in that application and production ramped up to meet demand for a good bulb that was long lasting and durable. Cheapness followed.
If you haven't yet, check out the link I posted for edison base LED lights. There's nothing there that can meet the need as a standard bulb replacement for most homes. The closest they come to achieving a standard bulb throw is a 30w standard bulb equivalent. It's not going to meet the demand for most applications. And that one is $30. Not a lot of incentive to switch, and a lack of early adopters will keep the price from dropping quickly.
There might be areas where they can fit in - say low light situations where the light is on all the time and the extra cost of the LED can be made up over time. Or an outdoor floodlight application that is on often enough or is in a place that is hard to change bulbs.
However for standard bulb replacement, the flaw is in the physical makeup of current LED technology. It doesn't fit the application well enough right now. Maybe someone will come up with an interim design before quantum dots become feasible, but at this moment they're not a great choice for regular bulb replacement.