I have already stated that I agree there are costs to maintain. What you don't understand is that those costs are minuscule in the big picture of what it costs to run the line and that operating a fleet of diesel buses is not cheap. Cleaning staff... there are 14 stations which were designed for low maintenance, the mostly do not have washrooms, lets be crazy and say it is a full time job to maintain it (I rarely see a janitor in the station so I'm pretty sure they aren't assigning a full time person for cleaning per station) so 14 people. How many people are bus mechanics, bus cleaners, bus drivers? Paying for fans and pumps... how much do you think these fans cost to run? They aren't nuclear plants, they are low maintenance HVAC units or industrial pumps that are expensive to buy, but not expensive to run. You don't seem to realize where the costs come from in running large business. It is always the largest consumed operational inputs (e.g. gas if you are a transport company, ink and paper if you are a publisher, hosting/CPU power if you are a website, etc), the staff, and the capital/debt financing. In this case the city doesn't need to worry about the capital/debt financing... the province already is covering that. So it is the other things, not the running of air conditioning, lighting, running a fan or a pump... it is the cost of the actual service, the consumed product, and not the maintenance.