You may create a user account and create and setup as many companies as you want for free.
When you want to enable paid features, each company account will be managed and billed separately.
Billing is simply month-by-month, and you can cancel at any time.
Backbone MRP Online pricing for each company:
Order Entry, Shipments, and Invoices: $35/month
You may enter parts, customers, and up to 5 orders for free before subscribing.
Quickbooks Online Integration: $30/month
Additional internal users: $20/each/month
Additional company locations: $25/each/month
Each company may have 1 internal user and 1 company location for free.
External users may be invited to view orders, shipments, and invoices for specific customers for free.