I agree with Heather. Ask questions if you have doubts or feelings about the cost. Believe me Dr Yau and his staff are worth the money. They care about your health and your success and the follow up care is so valuable that you will be so very happy you paid it. The staff are their to make sure you're cared for - and they do care.
I look at it as an investment in your health and happiness. Do it for you and your loved ones. Get the answers you need and then enjoy the process. You'll be happy you did it.
You don't need good luck - I know you can do it!
Hugs,