There isn't a better made, higher quality, pistol out there than the Rohrbabugh. I have one and I have another one on order. That $950 price is a bargain because they are going up. The carbon fiber for the grips has tripled in price in the last year. The heal butt mag release was done on purpose to both keep the pistol slimmer than a button release and, since the gun is designed as a pocket gun, there is no chance of sitting on the gun in your back pocket and ejecting the magazine.
If you are speaking about 'normal' carry single stack nines then I carry a SIG P224 in a vertical scabbard, the Kahr MK9 or PM9 is my choice for ankle carry, the STI LS9 is a great little gun.
One other thing, Your widths listed are not correct. That may be the Kahr's width across the slide, but the widest point is across the slide stop and is over 1". My Rohrbaugn is .88" at the widest point which is across the grips. I think you may have slide width listed, not the widest point on the gun.
As far as price is concerned, what do you consider your life worth? If I could buy a gun that was small enough and light enough that I could have it with me 24/7, that would be a guaranteed one stop stop with a hit anywhere on the body, 100% reliable, and able to shoot sub-caliber groups at 50 yards, I would pay thousands of dollars for it. The closest thing that I have found is a Rohrbaugh loaded with RBCD ammo. Both expensive, both worth it.