This sounds reasonable in isolation, but ignores the reality that the price you set is a big, blunt tool that determines who your users are. For some products, such as those that are challenging to start using but increase in value over time, your approach would filter out users who don't already believe in the longer-term potential of your solution. Is that a good or bad thing? Likely bad, but it depends on your product and the market it operates in.

If we distill this whole "pricing before product" idea down I think it's just a specific part of orienting to the needs and behaviors of users before designing the solution. Price is sometimes awkward to fit into something like user-centered design, perhaps because it affects users/needs, business viability, etc. but really it's one important factor among many. Maybe it's a very important, hard-to-change factor (likely true in luxury autos) but it can sometimes be a fairly insignificant or easy-to-change one (e.g. technology offerings with few substitutes).