Sorry, but it looks like @r2d2 is correct:
“We recently announced a storage model that provides schools and universities with a baseline of 100 TB of pooled storage shared across all users. The model provides enough storage for over 100 million documents, 8 million presentations, or 400,000 hours of video. This model goes into effect across all Google Workspace for Education editions for existing customers in July 2022 and will be effective for new customers who sign up in 2022.“
. I had already bought it for $4 when it had launched as I liked it so much. Seems like it’s still selling for $9.99 lifetime. Better to buy it now before the subscription plans are enabled