If you've seen this psych doc for at least 4 visits now, and you feel that she/he isn't listening to you, can you see another doc? I know its not easy to start over, talking about the problems with someone new, but it sounds like this isn't the doc for you.
One thing I really appreciate about the doc I see is she always asks if I'm having trouble with paying for my medications, if its too costly, etc. I do have insurance so I don't have trouble with the copays, but I appreciate that she makes it a point to ask all her patients.
Also, many of the various drug companies now offer help with paying for the brand/more expensive medications. You have to fill out a form and then they will either help with the cost or decrease the cost.