I just wanted to share my joy of purchasing the KP -- most likely the camera that I want the most that is out there, regardless of the price.
I purchased a K-70 last year because of the many features that are unique to Pentax, such as the astrotracer and up to 2000-shot in-camera multiple exposures. It was only after my first photo trip that I realized there was no way of using just the electronic shutter for the latter, and I noticed that I'd be spending most of the shutter's expected life within an year at the rate I was shooting away multiple exposures.
Many features of Pentax cameras make them a unique option in the market, but the 2,000 shot in-camera multiple exposure (averaging in particular) is really a one of kind. Olympus and Sigma have similar capabilities using their Live-ND and extended ISO 6, but they are both 2000 dollar cameras and only achieve 5 stops and 4 stops, respectively. With a 2,000 shot multiple exposure, you get up to 11 stops of ND-effect. Plus, if smoothing water surfaces or removing people from the streets is the main purpose of the ND-effect, I have found that the multiple exposure method is even more effective than an equivalent ND filter, because the total amount of time that passes in order to get the shot done is longer. In other words, you can achieve a pretty 10-stop-ish effect with, for instance, 256 or 512 shots instead of 1024.
Sony's older cameras allow you to do in-camera averaging via an app of up to 256 shots. This app, however, does not function with electronic shutter.
I have spent a couple of months doing research, and I have concluded that currently KP is the only camera that allows you to do in-camera averaging of more than 32 shots (Olympus Live-ND) using the electronic shutter.
So.. although I do lose quite a bit of money by selling the K-70 so soon after purchase, I am pretty confident that this purchase will keep me happy for a while.
Anyway, regarding the latter half of my tittle. Map Camera (a long-established used camera store in Japan) is currently selling several copies of good to near mint quality KP at 560-580 USD (free shipping) on ebay USA. Plus, I just got an invitation coupon for 10% off, up to 50 USD, which was perfect because of the price of the product. Check your inbox because you may have received one too. The combination got me a great condition KP for about 510 USD before tax.
Map Camera would give you a 1 year warranty for used products (!) if you were in Japan. Plus, Japanese customers rarely return products, so they are that much more serious about QC and QA compared to the average market. I'd say this pricing (especially with the coupon) is a superb deal.
Note that after a few days the discount pricing by map camera disappears, but they have so far restarted the discount pricing after a break of a day or two.
I can't wait to receive the camera....