For those who are ready to pull the trigger on a K20D purchase if the price is right, check out Abe's of Maine
Pentax K20D Digital SLR Camera w/ 18-55mm II Lens
I just received my genoowine Pentax kit with 18-55 Mk II lens and Pentax 2-yr warranty extension, for which I paid $790. The boxes were not sealed, but they did seem unmolested. The contents were pristine, and worked as expected, at least as far as I can tell after <24hrs (I didn't stay up all night!).
Is 2962507 an early serial #? I ask because the firmware was V1.0, which I just updated to V1.01 with no problems.
In any case, it feels great to be handling a real SLR again, where I can tweak the basic controls without taking my eye away from the viewfinder.