Too put the $$ in its true form....consider that a 2 tank boat dive runs $65+, then add air, crew tip and something to eat, and it's easily a $100 day! Ginnie becomes a good deal by those standards!
At the same time, there are four state park springs within an hour of Gainesville that are $10 a day to dive. Granted, some of them don't allow camping, and the ones that do are about the same price as Ginnie...
Manatee--you have Manatee and Catfish, both for $10. Camping is available, but I think it's $17.
Troy--no camping, but for $10 you can dive as much as you want

It even counts as a deep dive, I think, for AOW training purposes.
Royal--ok so most people hate it, but it's FREE! It might be a county park, I can't remember.
Then you can go to Ocala, and dive at Alexander for $5! You can camp there for free, just a few minutes from the spring.
So compared to a boat dive, is Ginnie a decent deal? Yeah, Isuppose. But why does Ginnie feel the need to charge more for OW than for cave divers? They wouldn't be willing to lose money on cavers, would they? If the answer to that is "no, they wouldn't operate at a loss," then they are raping us OW people for an extra $10 or whatnot (didn't prices go up?) for no reason at all! And we can't even see as much stuff! Then we get to shell out $20......last dive, I slept on a picnic table. Why did I have to pay $20 for the right to sleep like a bum? I think they should pro-rate it by how much square feet you take up or something.
Every megadive we argue about the value of the dive, and whether it's worth what Ginnie charges. My answer is that it is not worth it unless it's a megadive. I'm willing to have my wallet raped for the pleasure of seeing old friends and meeting new ones, but I would never consider paying that much just to get some more dives under my belt, when for $8 more in gas I can drive to Royal. Heck, now that I'm in Orlando, Alexander is closer than alot of other places, and that's only $5. They do have a ridiculous rule about no sharp objects (you wouldn't believe it, but they almost refused to let my tongue in the water. Gotta be careful with what you say to the smart-donkey workers....) but apparently are fine with solo diving.