Super-zooms occupy an awkward in the market. Cameras like the Fujifilm HS50EXR and the Panasonic DMC-FZ200 gives loads of flexibility, but compete in an uncomfortable position with the entry-level DSLR cameras which often cost the same or less. Sony has found a way around that problem with the DSC-RX10... by pricing it much higher... $1,299 USD high, that is. Problem solved.
That strategy, is of course, classic Sony. The RX100 II is already an expensive camera, but because of it's unique value proposition of having loads of horsepower in a tiny body, some people are willing to forgive it that. Taking the same sensor and tacking on a Carl Zeiss 24-200mm f/2.8equivalent lens...does that make it worth almost double the money?