I'm not sure if this is of any help to you...but here goes!
I had my pysch eval done in Milw. this past August. It was only a one time visit. The Dr. asked a bunch of questions as to what I thought was all involved in the surgery, how I would cope with certain aspects of my life, etc. Basically, all they want to know is if you completely understand this is a permanent change in lifestyle.
The cost was somewhere between $200-$250. My insurance paid most of the bill, I think I had a $30 co-pay, but because I didn't know if my insurance would cover it I remember thinking, "Hmmm...that's not too bad, I could have afforded that if I had to.", when I received the bill in the mail.
Hope that's of some help to you!