I loved the Mandara Spa - it is either at the Swan/Dolphin. Beautiful, relaxing and fabulous treatments. I had the best hot stone massage there. http://www.mandaraspa.com/spa/Orlando-Walt-Disney-World-Swan-and-Dolphin.aspx
I did not think the prices were out of line compared to other spas but definitely more than Hand & Stone (a chain around here) or the local nail places.