You mention that insurance is not covering it all - most insurance, if they cover it, cover a limited number of pills. Mine covers 8 pills per month, regardless of dose. Since I am prescribed 5mg per day, I would theoretically want 30x5mg. Thus 22 unpaid.
What I do is to buy 8x20mg, and cut the pills into (more or less, they are odd-shaped) 4 pieces. This gives me the expected amount within the "allowed" number of pills. I still have a deductible and co-insurance, but with what I'm spending on meds these and doctor visits, I meet both limits regardless, so it is less the cost than the quantity. And I beg samples from every doctor I see.