Yes to a degree. Unlike some other vendors we don’t insist that all users have the same edition of Workbooks.  You can therefore have some users with the CRM edition and some with the Business edition. In this example, users with the CRM edition just won’t be able to see or access records like orders and invoices from the database.
Extensions like Audit or Multi-currency need to be purchased for all users. Modules like Exchange Integration and Contract Management need only to be purchased for users that require that additional functionality.
You need to understand which of your users need access to which records in Workbooks. Only the Business edition includes Sales Orders, Invoices, Credit Notes, Contracts and Supplier Purchase Orders.
So if any of your users need to create, view or edit these record types you will need the Business edition. The only exception is Contracts, which can be added as a standalone Module to the CRM edition.
12 months.
Workbooks contains 100GB of storage as standard. If you use more than 100GB you will need to upgrade your storage allowance.
Workbooks includes 5 databases within each account at no extra cost. This allows you to run a production database and 4 additional databases for testing and development purposes. Each additional database environment will eat into your storage allowance so ensure you have enough storage to support your needs.
The API is also available at no extra cost (except the FREE edition).