Hi! Yes that's right. Sorry if it wasn't clear, but you do pay for storage. Cost is nominal compared to compute ($0.078/GB/month).

The other option is to define your entire environment as code using nix (we have native NixOS support). For example, you can use an agent to author code which declares everything on your machine: packages, libraries, shell, vim config... And then you can take that code and use it to rebuild a new VM on machine0 whenever you like (or somewhere else).

Docs here: https://docs.machine0.io/examples/nixos