Been a lurker here for awhile and just thought I'd add a little.
A good place to start is by doing a google search for the anthony calfo 'coral farming' video if you haven't already. Its about an hour and a half long but well worth it if that's what you're considering doing it. You'll have to do a lot of thinking and planning if its what you really want to do though. Also, expecting $30 a piece for selling things wholesale is probaly a little more ambitious than what you'd actually be able to get but you'll compensate by producing more each month. Perhaps a few of the veteran farmers will chime in but this should at least give you a place to start.