What is the cheapest route to go?
Cheapest isnt always the best. I suggest you look around at many registrars and use the search feature here. This question has been asked many times.
How do I get $5.99-6.99 domains to resell?
Normally this requires significant bulk to get such low pricing.
Are thier companies that don't require set up fees?
You would need to look around, there is over 100 registrars to choose from. Most require setup fees because they dont want people just coming and going at will if they are reselling.
Whats the negatives about this industry?
Too many people and it is very difficult to earn any money from domain registrations.
Many hosts use eNom because of its easy integration using its API.
There seem to be quite a few registrars nowadays... Unless there is something else you can provide, I would strongly urge you to look elsewhere at the present time.
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