For me, since I had a PM9, the R9S wasn't that much smaller, nor "better" for the money. It is incrementaly smaller, higher quality (for sure), but the value equation for me would have broken down had the R9S been >$1000. It would not have been worth it to me to get the incremental value (smaller, higher quality) at a much higher price point.
(I know, I know, the list price for a Kahr PM9 is around $700 so just a few hundred dollars more..., but! it is possible to find a PM9 significantly discounted in the $550 range. The same cannot be said of the Rohrbaugh. So we are talking 1.5-2X the cost.)