Nikon USA started a new lens-only rebates program in the US where you can get up to $450 off on select Nikkor lenses for both F and Z mounts. A few examples for Z-mount lenses: 85mm f/1.8S is $100 off, 35mm f/1.8S is $150 off, 24-70mm f/2.8S is $300 off, 14-30mm f/4 is $200 off, 24mm f/1.8S is $100 off. Here are the Z-mount rebates:
The new rebates should be also already available at Adorama and Amazon.
Update – here is the link to the current Nikon rebates at Adorama.