That was kind of the point, with Select you don't have to rip anything out. And start with a more feature rich system.

But getting the Caseta switches at 1/3 the price of RA2 switches is significant. My distributors are about the same price as you can find on amazon.com. So it would seem you are getting a hell of a deal on Caseta switches - much cheaper than I can get them for.
That then would be enough to support your argument with Caseta.