Hosting and domain costs are 58 euro per year. For upkeep, you can choose the budget option (I help you ad hoc for a low hourly rate of 40 euro) or the standard option (you get full support and upkeep for 30 euro per month).  I manage to keep my prices low by combining the hosting with multiple websites. Besides that, I teach you how to maintain your WordPress website yourself, so you have as little recurring costs as possible.