What is typical for expectant parent expenses?

We've only spoken to one attorney so far, but he indicated that he pays living expenses of all birth mothers while they are pregnant. For the birth mother he referenced to us, who was in her second trimester, expenses were almost $6,000. (He had them detailed out.) I completely agree with you on feeling like we were "buying a baby" with this specific situation, but I also have dear friends who have adopted 2 adorable boys through this same attorney and had a great experience. I'm interested in hearing what others who have gone through the process have to say.