Packages are priced according to the number of users (you, your co-worker, your customers) that can login to the io app (ioForms in this case) you are purchasing . Every other stuff is unlimited (forms, entries...). That simple.
We'll also be introducing upgrade + support plans (6 months of upgrade + support is included) for each package within a few weeks. These packages will be optional and reasonably priced (like $29/annual for the "One-Man Show").
Also, ioDeck is not all about ioForms. We are currently building other apps that will play well with each other (read more here).