Is your mom on Medicare? My mom went through a similar situation when she was first prescribed Tarceva. The medicare plan she was on at the time only covered a small percentage and we didn't know how we were going to cover the rest. I looked into changing her plan, called Medicare and had no trouble changing to a new plan the covered most of the cost. She only pays $60.00 a month now and she has since been reimbursed (from the drug company) for the first month's supply that she had to pay $900.00 for. Unfortunately for her, the Tarceva has stopped working. She currently still takes it in conjunction with Alimta (another more tolerable chemotherapy)and is doing OK. Although Tarceva didn't work for as long as we had hoped, it gave her time to do and see things that she had little hope of doing before being on this drug. Best of luck to you and God bless.