Need a homestudy

My husband and I have been researching adoption for quite a while and have an opportunity to pursue a private adoption situation. We are cautiously optimistic. Now, we need a homestudy. We live near Charlotte and a co-worker of my husband used and highly recommended Nathanson Adoption Services. It is a lot of money to spend and I was wondering if anyone had experience with this agency they would be willing to share? Or, recommendations for another great homestudy agency? Thanks in advance!