i had some limited communication with the gentleman that was selling on ebay that 91 560 sel referred to above in my quest to find one (i didn't buy it). in addition to the apparent stellar condition of the body and interior, the car REALLY was taken care of from day one as to maintenance ,,, all records of service done at the local benzo dealer, all scheduled maintenance done on time (or early in the case of the big 100k service). it really really is a good example of a pampered w126. even with 105k on the clock, the winner looks like he got him/herself a nice car.
with a w126 in such great condition, maybe 10k was a good deal? hard to say ,,, i think the kbb values go out the window when you are discussing these cars ,,, too much emotion involved. and to find a good one with low miles and all the maintenance done, i would assume, as scarce as they are, it would command a premium over the $10k or so that kbb discloses as retail value. don't know. alas, my search continues ,,,