Basic questions about resume and what I’d done in my career.

We didn't really get to the interview as she started with my salary expectations. I had answered some pre interview questions she sent via email. While I hate discussing previous salaries as I am taking a step down in income but really need a job. She said mid 30's and it appears that if this is a cold call sales role, commissions are only paid when goals are met. I spoke to two former employees who were much younger and used this role as a stepping stone for better roles with other companies and they said the goals were unattainable.