Great question. It's "free forever if you sign up now"

This project started out as fun, but after some feedback that "backup can't be free", I've planned out pricing to sustain the service long-term.

If you sign up before the switch, the service will continue to be free and unlimited forever because I appreciate your support. At some point in the future, the service will be priced at $0.07/GB/mo; 20% less expensive than raw S3 storage and 75% less expensive than tarsnap.

This pricing will pay for all expenses and allow the service to grow and pay for maintenance.