There are many people on here that breed and sell feeders. You can also check out the sponsor list, many places that sell quality feeders on that list.
If you go to your profile you can see a list of the trophies you have. My understanding about restricting new members is to keep people from spamming the market forums and keep people from cheating in the photo contest.
I installed a system that tests water for different diseases not to long ago. It would take samples from the main water supply and if there was anything there it would drain the system and run chlorine through. Im not sure what is cost but it was probably around $50,000. I would not recommend it...