What are some good sites the i could find pocket bikes for cheap?

I am looking to buy 5 of them so I could put one at each of my vacation homes, and I can't find them that cheap. It would be great if anybody could send me some links to great sites.

THANK YOU....What are some good sites the i could find pocket bikes for cheap?
http://www.happyscooters.com/Ninja-49CC-鈥?/a>

http://urbanscooters.com/cgi-bin/urbansc鈥?/a>

http://bigkidsmotorsports.com/

http://www.tomaliscooters.com/default.cf鈥?/a>

http://www.prodigygokartatv.com/pocketbi鈥?/a>

sea doo