Dr. McDonald seems quite knowledgeable about Yorkies and other small breeds. I know for a fact that if she does not know something that she will take the time to research it and/or speak to a specialist.
I wouldn't say their charges are 'cheap' but I think they're probably the average for vets here in Utah. Shoot Amber, I had a referral card from them the other week and I thought about you but just tossed it the other day. Anyhow, if you do try them, let them know I referred ya