I have a Nikon D200 with a AFNikkor 18~70mm lens with approximately 95,000 actuations. The unit really is in great condition with the exception of the command dials being inconsistent when trying to use. The last three days I have been struggling with it and could not get them to make adjustments as needed. This afternoon I tried again and they were working flawlessly until a few moments ago. I spoke with a technician at my local camera sales/service center and they quoted a price of approximately $200.00 including labor & parts. They are not sure if they have parts on hand and if not, they will have to order them and that may take weeks from now. When turning the dials, I can feel and hear the gears catching, so I do not believe there is a problem with oil causing slippage. When shopping around for another unit, I found one on the Internet for $126.00 that is claimed to be in excellent condition and comes with a 180 day warranty and a 14 day no hassle return policy. This seller is very reputable and I have done business with them in the past.
Many thanks for any helpful suggestions/solutions.