My first thought is, that's a helluva pricey faucet.
Mine too, and my second and third too.
He did a good number on me, explaining about the difficulty in obtaining replacement parts for some of the obscure brands that my house was apparently built with.
He proceeded to tell me that many of the parts don't even have part#'s, on purpose, to protect dealers.
Yes, it would be hard to find out his cost. On the other hand, making false claims about your product/service is illegal. And I didn't even ask him his cost.
But regardless, I doubt anybody would care to take the matter up. After all, there is a carpeting store about a mile away that claimed 50% off everything on the day it opened! Though for the last several years it's been going out of business....