My favorite site is
www.sailingtexas.com They are nation wide, not just
Texas. They also have many pictures and specs of the inside and outside of sailboats.
Hope this helps, Brian
Sailing TX is a good research sight, and good for prices. I sold my last boat and purchased my current boat on
http://www.sailboatlistings.com/search/. This sight also has pretty good search filters as well. Its nice to be able to sort by length, once you have filtered your search for a brand or type ie cat, or trimaran.
Something else to keep in mind is that Google is your friend. Any time you see a listing, search on the phone number or name, or any other information in the add. 9 times out of 10, you can find an address of the person in the listing. Once you find the address, locate the address on Bing Maps. This will allow you to actually verify the boat assuming it is sitting in the owner's yard, especially if it is a trailer sailor. On the internet, it is impossible to tell if the people are real, or just scammers. Even talking to them on the phone doesn't always confirm legitimacy. However if you find a photo of the boat in their yard, you have a pretty good chance you are dealing with a legit sale. One other thing, once you have a name, search that name on the sailing forums, especially any forum that is specific for that boat. You can often find the whole history on the boat, as the person talks on the forums. The best part is that it is all stealth, and you get a much better impression of who you are dealing with and if they are being honest.
Lastly, be patient. My last boat purchase, I ended up buying from a gentlemen that my first contact was a year and a half earlier! He kept having second feelings unsure if he really wanted to sell it. Sticking with it finally paid off. It was a 15 hour drive out of state, but ended up being a great deal.