17 fucking quid!?

I have no idea what the going rate for the service is, but I do know that it almost universally seen by bike shops as an opportunity charge what they like. I mean, if you can't be bothered to buy a couple of tyre levers with the tube, and do it yourself, you might as well as give yourself a label marked 'I don't care what it costs'.

Word.

It's much like car garages charging £50 to fill up the windscreen wash bottle during a service. If your too dumb or too lazy to sort it yourself you'll get stung for it.