He's selling 1,500 tickets, not 300. WAY too many people for any hunt. I attended the one he did in April and it was poorly run. Only 200 people for that event and he had a lot of problems. Started 1/2 hour late, had a 1/2 hour concert break (not necessary) and then the raffle took forever. He might pull it off, but don't bet on it.
He's also stated that he's detected the site, along with his buddies. Definitely not a virgin site. Maybe someone will pull out something historic, but will it be worth $150 or more? Add the cost of gas, food and lodging and I see myself spending at least $500 for the hunt. Not gonna happen.