The other thing when it comes to prescription ask the pharmacist if there is another option. I was prescribed a 600mg once a day pill, it was $600, I asked why so much and like you also asked my health insurance provider. I was told the 300mg ones were a hell of a lot cheaper, ($3.50). So I checked with my doctor since they were a time release pill to see if two a day would work for me, he said it would and to space them 12 hours apart.

It is a difficult and may take a little time, but working with all three, (doctor, pharmacist, insurance), can help with the cost of prescriptions.