I have one more session before my diagnostic session, but the total cost quoted to be on the day of my first session was $1,600. This is with a licensed psychologist who specializes in Aspergers.
I contacted my psychologist nearly two years prior to starting sessions with him, because I changed my mind about going for the diagnosis (felt that self-diagnosis was enough, until I began having more issues post-college). In that first email, I basically explained to him all the reasons I was seeking diagnosis. When I finally contacted him this year, I briefly re-summarized, and on the day of our first session, I printed out and brought him a packet containing all of my online test results, and all of my Aspergers related issues. He said he found this enormously helpful.
Also, I usually email him mid-week between each of our sessions with things I may have forgotten during our session, or to respond to an 'assignment' he gave me (like researching ADHD, researching mirror neurons and watching 'Adam'). This all cuts down on the need to spend an hour 'on the clock' discussing all of these things.
_________________
Aspie Quiz: AS - 141/200, NT - 77/200 (Very likely an Aspie)
AQ: 34/50 (Aspie range)
EQ: 32 / SQ: 68 (Extreme Systemizing / AS or HFA)
Diagnosed with AS and Anxiety Disorder - NOS on 03/21/2012