Printer leasing solution (rent a printer with optional add-ons)

We aim to release a website that allows clients to customize office printing solutions and get a price for the leasing costs in real time. Today, we are offering printing solutions to companies all over Sweden, but each new business-agreement requires our sales representatives to analyse the clients needs and present offers with a solution that we believe will be best suited for the client. As a compliment, we want to offer an online solution where the clients choose the basic printer, where they can choose from different brands, printing speed and scan features, and add paper trays of different sizes, finishers and additional add-on features. They will then get an updated monthly leasing-price in real-time when they add or remove features from the printer. The leasing cost will be fetched in real time from a credit company that offers this through an API that is well documented for use as implementations as this. Before the client can customize their printing solution, they will need to too create an account on the website with all the necessary company details before they can access the service.