March is still peak season in AZ, so you won't find much less than $100. Having said that, I have been able to find some 'cheap' rates at the following as a single:
The Legacy Club (not in Scottsdale, South Phoenix)
Raven Golf Club (also Phoenix)
TPC Scottsdale - Champions Course
Legend Trail - underrated; I really like this one
Ocotillo Golf Club - (in Chandler, lots of H20)