I doubt that you would ever see these out of sight of land. The boat has a dagger board and rudder that lift up allowing it to be sailed right onto the beach.
You will get a lot more for your money if you buy used. If I am ever looking for a small boat (<20 ft) I would be looking at cat boats. I love the design and it amazes me how much boat can be packed into 18 feet. You can see some designs here. popular designs..