FYI: 300 TB egress at standard GCP pricing is already more than $17k.
I run a SaaS on Google Cloud functions and the bandwidth cost from somebody linking our homepage in a HN comment is often 2x the cost to run the actual service.
FYI Netlify doesn't work well with Cloudflare. That's the reason why it's so expensive as a standalone option.
https://community.netlify.com/t/how-do-i-use-cloudflare-dns-...