Amsterdam Canal Cruise Cheaper Option

When we got to Centraal Station of Amsterdam via Tram from the Cruise Terminal (see this video https://www.youtube.com/watch?v=bNuUtK4YNr8 ), we asked locals where to buy tickets for an Amsterdam Canal Cruise. One local mentioned a "just as good" option that is actually cheaper than the Holland International. Unfortunately we did not see where to buy the tickets for that lesser-expensive option until we had boarded the Holland International river boat (16 EURO). This cheaper one is called Rederij Kooij (9 EURO) and as you can see you can buy the tickets right there under the bridge near Centraal Station.