See, this makes it a good experiment for many of us, since the rest of us are not going to measure costs as painstakingly. My sense is that I pour ridiculous amounts of money into my bikes, and maybe I do, but the payoff might be higher than I think. Lately, I've been tempted to take the subway but decided instead to cycle just to save the $2.50. Now I'm glad I did.

Remind us what city in England you're in?