With the closing of Mosquito Creek, there is a real scarcity of moorage available. I have a 50' x 15' (750 SF puddle) that costs $18,000 per year plus electricity. A 60 x 20' (1200 SF) is about double that due to the increased beam causing the square footage to almost double and the economics of less availability vs 50s.
So as a rough guide - a 60 foot slip is about a 10 year waitlist in Vancouver, and it's about $30,000-$40,000 a year, payable in advance for the year. Taxes extra. Electricity extra.