That’s a pretty steep discount! However it’s not live yet on the Google Store and apparently it’s limited to the US market for now.
Source: https://9to5google.com/2023/08/06/pixel-6a-199-discount/
EDIT: even at this time the deal is still not live on Google Store, looks like they might have a supply problem.
On Google Fi however it is listed but it is out of stock:
EDIT 2: looks like Google canceled the deal.
Checked the store like 50 times since then. On Google itself it lists the sale price but when you click through its still 349
looks like it’s out of stock already on Google Fi (see edit), might have to wait to see if they’ll still go through with the deal on Google Store