Hi Frogman
Broome is probably one of the only towns in WA that is predominantly catering for tourists, and during tourists season, some of the price changes (they go up) show this. It is correct that at this time of year you would have to pre book, but I am sure if you PM Steve and Viv (they live in Broome) they would be ablt to give you accurate information.
Regards
Tjupurula