B&H currently has a refurbished Nikon NIKKOR Z 58mm f/0.95 S Noct lens priced $500 below the MSRP ($7,499 instead of $7,999):
Previous coverage of the Nikon NIKKOR Z 58mm f/0.95 S Noct lens can be found here.
More refurbished Nikon gear can be found at Adorama, B&H, Amazon, eBay, and BuyDig. All refurbished Nikon products come with a 90-day warranty.