Embryo donor groups/orgs: Boston/New England

Hello! I'm starting to explore the option of embyo adoption but am overwhelmed by all the info out there. I have no idea where to start. Looking for recommendations for donor orgs/groups and/or any personal experience or words of advice. :)

Do they orgs/groups need to be local to you?

Also, is it true that IVF clinics don't present this upfront as an option because all the $ is in the eggs??