My Husband Was Prescribed Zetia By His Cardiologist. We Are

My husband was prescribed Zetia by his cardiologist. We are now retired and our pharmacy plan does not cover this name brand drug. It would be $500 to fill it for 90 days. Is there an alternative? I'm thinking he needs to go back to the doctor on this. We cannot afford the medication at that price. My email is YYYY@YYYY . Thank you.