When I did search (AdWords) for Thomas Cook, a now defunct but then major travel agency, we'd pay £10 or more to Google for a single click sometimes. (Full st

When I did search (AdWords) for Thomas Cook, a now defunct but then major travel agency, we'd pay £10 or more to Google for a single click sometimes. (Full story: https://news.ycombinator.com/item?id=21046731 https://news.ycombinator.com/item?id=21046731)