Got an email from google couple hours back with details of some offers which don't reflect on store.google.com directly
The only usable of them all is $300 off on Pixel 3/3XL
starting from $499
If i click on link, it takes me to page with $200 off only, therefore some out of sync activity from Google.
The terms and conditions in email clearly mention that you can get $300 off using promocode while there is none mentioned in email in clear text
I guess working with google support one still can do it if really need to buy
Marked it YMMV because not sure if everyone got it
Will post screenshots when get to desktop