https://9to5google.com/2022/01/19/g-suite-legacy-free-edition/
..Upgrading from your G Suite legacy free edition to Google Workspace will only take you a few short steps and is not disruptive to your end-users. To support you in this transition, you will have discount options for 12 months after July 1, 2022.
Plans start at $6 /user/month with Business Starter and go up to $18 /user/month. (Very small businesses with just one existing Gmail can also upgrade to Workspace Individual for $9.99/month, but will not get a custom email address.) Google will suspend your automatic Workspace subscription/accounts if you do not enter billing details before July 1, 2022.
After 60 days in suspension, you will no longer have access to Google Workspace core services, such as Gmail, Calendar, and Meet. You may still retain access to additional Google services, such as YouTube and Google Photos. Enter a valid form of payment to restore your suspended account..
