Fair questions of any Realtor:
1. Ask to see their listings that are active or sold (your specific type/location/price range)
2. Are you a full time Realtor? "R" logo on cards means they abide by professional ethics
3. Will I be working with you directly? (and do you like the person, feel they 'get you')
4. How will my property be listed and what costs do you expect me to pay for (specifically)
Remember, you can fire your Realtor or Lender at any time you are not happy with their service. If you decide things are not working, have a direct and professional converation about your concerns first to see if you can resolve your issues. Good luck!