http://www.oceankayak.com/These start out pretty inexpensive.....
I bought two last year and have floated the Cahaba from Leeds through Helena, the Little Cahaba in Montevallo, a run on the Little Mulberry Fork....and miles and miles in the ocean. They are very sturdy and can handle a beating. I bought the two I have for $229 a piece....so it really doesn't matter that much if I screw them up. I thought I would be into a new boat by now, but I'm still enjoying these....