Usually the best value is found in a used kayak. Many people start with a new boat then lose interest. So there is a good market in nearly new boats. Of course you need to know what type of kayak suits your desired use and skill level and the best way to determine this is to take a course in your locality.
Sun DolphinPelican MatrixOcean Kayak Scramble
Normally the best kayak hulls for speed will be long and narrow. This gives them the best "glide" properties.
around 150-300
vanagon
yakfishin365
kayak
no, a kayak is a kayak NOT a boat
Colorado Kayak is probably the best place to go for good deals. Confluence Kayaks is another option. The website "Kayak" has information as well as car rentals.
It is a kayak.
Kayak
The best online site to order kayak trailers so you can have one for the Summer would be the following: http://www.sportsrig.com/. They have a good selection.
Typically you can find the best cruise deals on larger travel sites such as kayak, expedia, travelocity, orbitz, and hotwire. Kayak would be an excellent place to start your search.