Cloudflare's R2 costs $0.36 per million read operations (after the 10 million you get for free) [1]. Vercel is wrapping R2 and is charging $2 per million reads [2]. They're also charging $0.15/GB for egress (after the 1GB you get free), when R2 charges nothing, and the storage cost is doubled from $0.015/GB on R2 to $0.03/GB on Vercel. That's quite the cost increase for the DX improvement.
[1] https://developers.cloudflare.com/r2/pricing/
[2] https://vercel.com/docs/storage/vercel-blob/usage-and-pricin...