Was at the Fitness First Macquarie Centre today and saw a small ad flyer of Head and shoulder shampoo on the counter that read "Ask for free sample" so I did and the attendant gave me a generous 200ML bottle of this shampoo which costs atleast $6 in Chemist Warehouse. This could be at other fitness first centres too so check for the flyer picture I have attached. Also, it obviously is for members only. I had a free trial pass so it did not cost me anything.
They've been doing the same at Good Life gyms for the past month so probably something they are doing at all the chains. At my location, all the shampoo is out to take so safe to say I have enough shampoo for a while. :)