Bipolar Disorder Support Group
Bipolar disorder is not just a single disorder, but a category of mood disorders marked by periods of abnormally high energy and euphoria, often accompanied by bouts of clinical depression. This is the place to talk about your experience with bipolar disorder, learn from others' experiences, and find support.

It's worth a try!!
Some doctors will get you drug samples as well.. It would be worth asking him/her
http://www.dailystrength.org/c/Bipolar_Disorder/advice/8224882-advice-link-free-health
Also, Target and Walmart have a plan where some meds are only 4 $ each.
You can also try contacting the Pharmacutical companies as noted above
Sounds like you have some good resources to check into. I wish luck and finding a way to lessen the cost.