Deep sea is different. These guys are inshore and near-shore. Small boats (20-24').
There are deep sea charters out of Savannah and Mayport, to name a couple nearby. All day affairs. Bigger boats (55+), and they take like 20-40 people out to the shelf (50-70 miles out) for the big fish. No idea what they charge, but you could find it easy enough online. Most folks get seasick, or drunk, or both...and end up not catching a dang thing.
I have a friend with a 26' cat, and he goes out 80-100 miles, stays overnight (open deck), and fills his fish boxes. He keeps me in fresh fish. I love him to death, but he's crazier than a sprayed roach. No way I'd go with him.
I forget what it was, but he caught something a month or so back that ended up breaking a $600 rod. So...big fish. I'd rather stand at the seafood counter at Publix and pick what I want to eat. Nothing they have costs $600, plus fuel, plus tackle, plus bait, plus a 200k fishing boat. Plus lowering yourself on the food chain by going that far in that size boat.
Economics 101.
It's better to have a friend with a boat than your own boat.