Independant adoptions would be difficult in Nevada because this is a state where it is illegal to advertise. I spoke with an attorney here in vegas who had alot of answers for my many questions - there are 2 certified adoption attorneys in this state - go to
www.adoptionattorneys.com - I think that's the link. let me know if it doesn't work.
Basically one wouldn't tell me anything unless I met with her for a $200 consulation. The other was friendly, but said that they don't get involved until we have a match. And they also told me that it's illegal to advertise yourself looking for birthparents in nevada. Which I believe is what you have to do to get a match.
Don't forget whichever way you go that there is a $11600 tax refund towards expenses when you adopt. And each year it goes up $1000. Plus, check your work - my work also reimburses another $5000 for costs.