The software is on a commercial license which means a download will be provided to you after the purchase is complete. The email you'll receive will also contain the serial number/license key to activate the application.
However, the only way to purchase it is through their sales representative. This can be achieved using the contact form that they indicate to be used in case someone wants to find additional info about the product.
Access the following page and fill it with your details along with the question related to purchasing: http://www.natus.com/index.cfm?page=form_1&crid=70&contentid=18
