ABC is reporting no financial terms were disclosed
Got 'em right here - $17.1M per school. That's a raise of $13.5M per year.
http://www.postandcourier.com/article/20120509/PC20/120509128&slId=1
Now, over on the UConn conference realignment board, NelsonMuntz and a couple other posters are saying this is a terrible deal for the ACC and that Swofford must have caved in on the negotiations, because he locked the ACC into a deal for 15 years that pays out less than the Big 12 (by $3M per) and the SEC and Big 10, which I believe are at $25M and $23M per year, respectively. Personally, I don't think it looks too bad, since ACC football hasn't been exactly living up to expectations these past few years.
Nelson spins a tale / interpretation of events that suggests that there may be a behind the scenes deal that ESPN will help the ACC keep Fla State and Clemson in exchange for the long term deal and no renegotiation rights. I think, from Swofford's point of view, he was able to work a $4M/year increase due to the acquisition of Pitt and SU, so you had to figure that ESPN would close that loophole in the contract that permits renegotiation.
Losing renegotiation works to Swofford's and the ACC's benefit, too, so long as it is mutual. That would mean that if Fla State did bolt at some point, the ACC wouldn't have their existing deal renegotiated downward by the defection.
Personally, I just don't see Florida State or Clemson going anywhere other than the SEC. The distance makes travel too expensive and will hurt fan interest if they were to go to the Big 12, as has been rumored lately. Their closest opponents would be 800+ miles away (WVU and Texas), and none of the others closer than 1,000 miles.
Then there is the academic prestige angle, which many forget about - but that's the reason WVU couldn't get into the ACC with their outstanding athletic programs. The Big 12 schools are a notch below the other major conferences, and well below the ACC in particular, academically. FSU and Clemson can feel better about their academic status by being associated with Duke, UNC, UVa, etc. Their only real fit is the SEC, but I think the SEC thinks that things are perfect in their conference right now. They rule the roost in football, and appear to have that locked up for the foreseeable future.