Info Please

As some of you know from my previous posts I have 3 bio children (22, 19 & 14), have legal custody of a 5 year old, have adopted a 2 year old (In November 2004) and will finalize the adoption of 2 more of our foster children (ages 2 & 5) within the next few months. Last night a good friend of mine contacted me saying she knows of someone who is pregnant (due in approx 2 months) who is looking for a family to adopt her son. I don't know all the details yet & I'm waiting for more information BUT she said she has prayed & prayed about it and my name just kept coming up. I, of course, told her I would be willing to discuss the possibility and another third-party person is going to contact me with more details. I also realize that it is very likely that once the baby is born she will decide to parent which is fine. My main question is to find out if anyone knows what (ballpark figure of course) the adoption would cost - Our home study is current so that is something that doesn't have to be figured in. We didn't pay anything for the other adoption in Nov nor will we pay anything for the next two as they were foster children that we adopted & the state pays the attorney fees. Any information anyone could provide would be much appreciated. I'm anxious, nervous, excited, but hesitant all at the same time. Thanks!