Seems like they could pratically host everything on Cloudflare and save even more money.
Asset storage: Backblaze B2 – $11 (replace with Cloudflare R2)
Web hosting: Vercel – $20 (replace with Cloudflare Pages, $0 cost)
Database: Firestore – $100 (replace with Cloudflare)
API: Vultr – $5
Image hosting & optimization: Bunny.net – $27 (replace with Cloudflare)
Domains: Cloudflare – $4
Email fees: MXroute – $3