I spent less than 1k on a bicycle that I rode for about 15.000 km within the first 18 months within the city only. It was always serviced in a shop. That makes

I spent less than 1k on a bicycle that I rode for about 15.000 km within the first 18 months within the city only. It was always serviced in a shop. That makes 6ct/km (1.6 if we don't consider the bike itself) at what is still the early stage of a bicycle's lifetime. I think that qualifies as virtually "free".