Question:  Can I purchase a license for the Remote Device Manager that allows unlimited configurations?
Yes, you can purchase an unlimited license.  The license for 10 configurations and under is Free, but if you need more than 10 configurations (devices), you will need to purchase a enterprise license.  With the enterprise license, you will also be required to purchase mandatory, 2 year service agreement for the product.  It is 18% of the SRP per annum.  This is an ‘evergreen’ solution to support you with future updates.
Verification Source: Rick Maxwell, Philips Product Manager