i bought a krasnogorsk-3, the russian 16mm camera which can easily be converted into super16. you can find them for $200 or less on eBay. if you want to learn more about them, see these links. follow the second link and it will also bring you to a page with budget 16mm cameras, including the arriflex 16s.
K-3 yahoo group
low budget cameras
K-3 yahoo group
low budget cameras