Lord, that price seems criminal to me. I would definitely look for someone/something else. I mean, is this really something you can't do on your own/with your current T/ with a "regular' T? My experience with exposure therapy is that you're really doing all the work. I'm not sure how much the T has to offer beyond emotional support/strategies to reduce anxiety. And $500 for that for 2-3 hours for 3-4 days a week seems ridiculous.