Pharmacy Price Change

I currently have Blue Cross Blue Shield of Illinois, each month my prescription was $25 and I was so happy to be able to afford that; but this month when I went to go pick up my prescription they said it was going to be $457. I called BCBS, and they said they’ve been getting a lot of upset calls for the same thing, and that it was the pharmacies were running something to be able to get the prices that low. I have no idea what to do, it’s been finally working for me and there’s no way I can afford to pay that a month.