I think you could raise the price to $30 at minimum. The hybrid approach is also viable. As the other poster mentioned, you could add features to justify a "pr

I think you could raise the price to $30 at minimum. The hybrid approach is also viable. As the other poster mentioned, you could add features to justify a "pro"-labeled version... maybe pivot-searching backups, or automatic S3/rsync/etc backup. On the subscription side, an obvious option is hosted backup service that charges per GB per month (hopefully $5-10/m for the average user).