You can get two new Ascend kayaks for that price, they are the bass pro brand and have good seats, IM district paddle on here he is on the kayak pro staff there if you want to demo one. Don't forget to budget for paddles, life preservers, whistles and 360 degree lights if you are going out 30 minutes before sunrise or staying out 30 minutes after sunset.
I would recommend trying as many as you can before you buy one, Mariner Sails is having a get together on lake fork Oct 3 that will have a lot of boats to try.
"Ipsa scientia potestas est"-Knowledge in itself is power - Sir Francis Bacon
"Beware the lolipop of mediocrity, one lick and you could suck forever" - unknown author