True. My comment was a bit tongue-in-cheek... My initial training was a fixed-price deal with (I later found) lots of gaps in it. I don't really begrudge the £70 having travelled out of my way to fly with that particular instructor / examiner, who is a good friend.
But now that I know that someone nearby charges £0, I just might be able to persuade him to pay for the beers next time round. Doubt it though..... parting a flying instructor from beer money isn't easy!