I am 40 minutes (no traffic of course)from greenwich and is that expensive. They are close to NY and many people commute which makes realestate out of this world. Not sure of the slip situation but the farther north you go, the cheaper it gets. I boat out of saybrook which is another 30 minutes from greenwich. Some other towns that might work for you that are close to greenwich and maybe cheaper is stamford, norwalk, bridgeport, and new haven.