John W. Wall , Aug 24, 2010; 06:30 p.m.
How long has it been squeaking? Did it squeak when it was brand new? I bought a used 17-35mm that squeaked, also got a very good price, and it didn't affect the quality of the images I got from it. I usually used it in MF mode, though.
I have a 300/4 AF-S that does not squeak. I frequently use it in AF mode, and I'd probably be driven to distraction if I heard a lot of squeaking. You might not mind it in the first 15 minutes of use. But how about by the end of the day? You'd either not even notice it anymore, or you'd be in screaming hysterics. Personally, I would not want a squeaker at any price.