What are the differences of an international adoption in comparison with a domestic adoption?
International adoption can be very costly, but you know up front the fees you will be facing. Domestic adoption can cost very little, especially if you go through your state and adopt from the foster care system. The cost of a private adoption depends on agency fees, attorney fees, the race of the child (unfortunately), and whether or not you have to pay for an expectant mother's care.
International adoptions often require you and/or your spouse to travel to the country that you're adopting from for an extended stay that usually ranges from one to 2 weeks. With some international adoptions one or more trip may require.
When adopting domestically there is usually very little travel involved.