Currently Tesla is charging $12,000 for access to their self-driving package. Even if we assume that the price would increase to $19,500 if they included a lidar (I'm skeptical), it would be the difference between paying $12,000 for a feature that doesn't work versus $19,500 for a feature that might work. This is a luxury option no matter which way you swing it.
Definitely a luxury option for showing off at this point, as a status symbol, lots of people out there daily drive cars that don't have a bluebook value anywhere near $12k for the entire vehicle.
Problem isn't how much LIDAR used to cost or costs now. Problem is that customers paid for a product, and they still don't have it, many years later. And what is being showed nowadays is nowhere close to what was advertised.