I was only joking, I maintain my own bike, but it does cost to have them serviced for a lot of people, and this costs almost as much as a car (depending where you go). I get through brake blocks quicker than most cars get through pads and shoes, at similar costs, I was getting through tubes fairly quickly till I changed tyres.
Bar stem & bars £50 and not expensive ones, saddle, seat post, pedals & shoes x 2 pair, 2 rear cassettes 2 chains, chainrings, I could go on with things like clothing ect, get the idea.