Most marinas have websites which detail their prices.
Westbay Marine Village and RV Park
Greater Victoria Harbour Authority
These are in Victoria Harbour. Westbay is private and the other link is to the Harbour Authority marinas. I live at Coast Harbourside Hotel and Marina and there are a few others as well. Victoria treats liveaboards well and it is not frowned upon as in some locations. Where I am it is a 2 price system, higher in the summer as it is a hotel marina. For my 27' boat I pay $339 from Nov 1 to March 31 and $595 from April 1 to October 31. Average $500/month for a 27' boat.