Actually my agency recommended that it be done this way, they said it was important that I get my own lawyer for the donor contract. Having seen their agency contract, it was terrible (all about protecting the agency financially and nothing about protecting the recipient), so I knew I wanted my own lawyer to protect my
interests when it came to the donor contract.
I think you would want a lawyer in the state that where the clinic is and where the donation will be occurring, but I'm not sure, so double check on that. Yes it does add $$ but when I was shopping around, I got quotes from $650 to $800 for the donor contract so not too bad, and I live in an expensive state.
I had several donors fall through early in the process so my biggest fear was a donor changing her mind after the contract was signed, I didn't want to be out the agency fee and all those other costs of the cycle and no donor! My contract had language to protect me financially if the donor changes her mind, fails to turn up to appointments, doesn't take her meds, says she must abstain from any drugs not approved by the clinic etc etc. It was really quite thorough. And of course the lawyer is familiar with and should be up-to-date with any particular state laws that may affect the egg donation, and will cover all the aspects of making sure the donor has no claim to any offspring. It was really quite a comprehensive contract when I read over it, about 15 pages worth, and I am glad I had it done.
I used this website to find an ART attorney in my state: http://greateggslegal.com/
and emailed a few laywers for quotes. The whole contract process was handled by email and was very efficient.