install.sh --public-setup is gone. An install that used it and has no account yet gets a setup key on deplo update, so the bare /setup link stops working: run deplo update and use the link it prints. To hand a customer a ready account, install with --owner-email and --owner-password instead, see Offer Deplo to your customers.
Install takes one command on a server you already pay for. What you do with the money you get back is your business.