Where to buy used Nikon lenses in the USA?

Question

What are some of the sites available for buying used lenses for the Nikon D-90 camera body? Do any specialize in Nikon or have enough supply to deeply cover Nikon lenses?

Answer

Apart from KEH that MikeW already mentioned, take a look at Grays of Westminster. I found their collection pretty good and complete. It is an exclusive Nikon shop. The shop is in UK and referred to as "The High Church of Nikon". Their website, unlike other online store websites, is very well organised.

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