Jarrod's book has a ton of information in it, but little of it is "I could put this into practice tomorrow" type information. The OW manual is much more hands-on pragmatic, and gives you a lot of information on HOW things are done.
Cost for Fundies is all over the map, because it depends on what the individual instructor charges, as well as transportation and housing costs, boat charters or entry fees to sites, gas fills, etc. I paid $500 for Fundies, and I believe the most expensive class I've seen is $1500 -- but that's in MX, where the instructors teach Fundies during time they could be teaching Cave 1, for which they earn far more. Call Ed and ask him what he's charging. That's the best information you can get.
The recommendation to register on the GUE forums, and to join GUE, is a good one. I actually recently started a thread on how GUE instructors are perceiving the Fundamentals class, since the Primer came into being, and you might find their answers interesting as well.