I recently was looking for a spa that was affordable to get a massage. I was researching pricing online and found something that surprised me. Women's Hospital has a Spa in their fitness center on Bluebonnet. I never knew it existed before I started doing research on pricing. It is very affordable as well. Here is a listing of what they offer: http://www.womans.com/the_spa/treatments.php?GMxTL=47
I got the 1 hour swedish massage. The masseuse was very pleasant and friendly. They had very comfortable massage tables and soothing music.