35€ / year is a very good price even for a home user. After all you use a free mobile application on unlimited clients, web user interface, notifications, server modules all which pass trough Mobile PC Monitor's servers, I can't even think it's profitable to sell subscriptions so cheap with the prices these days. I am using it for personal and professional use and I consider the prices to be acceptable.
Also if your new here why not check out some cool plugins that are released here, they are free of charge and useful.