hmmm.. I am not 100% on this because I have never been there, but I don't believe the CS has a full blown spa. I believe it is what Disney calls a "fitness Center" it is a nice gym with massages and a few body treatments that is similar to what they have at the Animal kingdom lodge.
I believe there are only 2 full service spas on property - the GF and Saratoga Springs. Nikki Bryan is the company that runs all the Disney salons and spas. the website is www.relaxedyet.com
We got married back in 2002 and honestly, I can't remember. The reason I used them was because we were staying at the Coronodo and it was just easier. Sorry I can't be more helpful.
The price list is on the link I posted above www.relaxedyet.com If you want to know about CS,AKL or whatever click on fitness centers the other full service spas have their own links. There you can find the treatments they offer and the prices. I am sure the full service spa is much nicer than the mini salons considering the price. As others have mentioned there are other spas....the is the Mandara Spa at the at the Dolphin which is the same price wise if not more than the GF (but it looks really beautiful with an asian/zen thing going on) There are also nice spas off property (but close to downtown disney) such as the Wyndam and the gaylord palms. I beieve I have a price listing for the mandara let me know if you need it I will see if I can find it and email it to you.