Good question, but it is different than paying for a festival ticket, where typically one can see 10-20 bands over a three day weekend, paying no more than $125 dollars for a ticket, which includes camping space. My last big festival was Bonaroo, and it was more like 30 excellent well-known bands, and I think my tickets were $100 ea. I probably spent at least twice that much on food and vending, which supplements the event's revenue, by charging vendors fees. I think for an event like this to be successful, you must first get people to show up. Once you have the demand, you can charge admission, or raise the price until that demand tapers too much. I knew of two acts at this event, before I began to read about them. Start with lesser known NOLA artists, which don't require as much pay, and after your event is successful and in high demand, get a big draw band and charge some admission, but as pointed out, mom+pop+kid at Seaside Jazz Festival = $750. That dog don't hunt.