Enea That is the price for 1 business account. If you want 2 business accounts (if they're two separate businesses) and 1 personal account, the total monthly costs from the subscription alone for you would be 9.99 + 9.99 + 7.99 = 27.97 Euros / month. Of course, certain actions and services can incur additional fees according to the pricing sheet, which can be found here: http://bunq.com/pricing-sheet
If you're only talking about bank accounts or IBANs, and not actually separate business entities, then of course 1 business account would be enough, as you can create up to 25 IBANs in one membership. That would bring your monthly subscription fees to 17.98 Euros.
If you want to save on these a bit, you could consider sharing a bunq Pack with someone: https://www.bunq.com/benefits/bunqpack
