In Crandon Marina (A Miami-Dade County Municipal Marina) on Key Biscayne, FL I am charged $455.00 / month for a thirty-five foot slip and that includes 30 amp electrical power and fresh water. The piers and fingers are 2002 floating concrete in great shape. Marina security and parking are reasonable (not great). The lighting is very good. The location on Biscayne Bay is the best. As a result of the local market being influenced by some larger local private marinas colluding for some outrageous gouging, Miami-Dade County has increased the rates approximately 20% since 2005.