Amazon is having another one of their short and exclusive sales: the Tamron 35-150mm f/2-2.8 Di III VXD for Nikon Z is now $1,484.95, almost $500 or 26% off (sold and shipped by Amazon):
Update: sold out already.
The same 35-150 lens is currently $1,999 at B&H Photo. Previous coverage of the lens can be found here.
Also: the Tamron 70-300mm f//4.5-6.3 Di III RXD for Nikon Z-mount is now $599 or 14% off at Adorama, Amazon, and B&H Photo.