Sounds like they’re just using the wrong service. R2 is designed for object storage, and has 0 egress fees. That’d be the way to go. Not sure why the support engineer didn’t mention it. The standard cloudflare web caching probably doesn’t work well for this use case for whatever reason. The price is only 0.015/GB/mo, so the ~MB(?) of list would be served in perpetuity for less than a dollar.