These days you really have to get aggressive with your insurance company....many times if your insurance company has a mail order pharmacy then you canb really save.
When I had my old insurance company they told me that my Humira ( I take 1 shot each week)would cost $750 per injection w/o insurance.....$375 dollars co-pay per injection if went through my pharmacy and only $50 for a 90 day supply if I went through their mail order.
My new insurance company BC/BS of Florida said the w/o insurance cost was now over $800 per shot....if I used my own pharmacy the copay would be $100 every 4 weeks or through their mail order pharmacy it was only $100 for a 90 day supply.
You have to ask about everything these days...many companies will provide the drug for free or at a very reduced price if your income warrants it.
You also, as has been suggested, need to be very frank with your doctor and let him/her know what you can and can not afford