For years I have paid for Add-Free Hotmail/Outlook.com.

If you want to completely remove ads from your account, you can upgrade to Ad-free Outlook. Please refer to the link below for more details on that:
Ad-free Outlook.com
http://windows.microsoft.com/en-us/outlook/ad-free-outlook

What do I have to pay to make the new non-graphical ads go away?

Or am I being SCROOGLED when you take my money for a service and then change the terms of the service?