you can contact fatigue, but not sure will he still having backlog not clear.
you can send it to Nikon Service Center to ask a quote, without seeing the lens, they won't able to give you a accurate cost.
and very important thing, if you have not using a dry cabinet, it is time to get one now. after cleaning, it will not guarantee fungus will not recurred unless you have your proper storage for all your gears.
... and many more. As stated in the CS terms of use, please SEARCH before you post. This way, your repeated-to-death question does not add to the clutter, it becomes easier for others to find the correct information faster, and the sharing that others have done before does not go to waste.