I'm doing it. I know it is expensive, but it is really worth it. This may be cheeky to say, but seriously consider a bank loan to do it.
Once that cord is thrown away, you'll never get it back. Cord banking has already helped babies and small children get over diseases like cerebral palsy and sickle cell anemia and you cannot put a price on that! It can also help with leukemia, HIV, anything that requires marrow/white blood cells. And the cells may be able to help yourself, the father, and even other siblings.
Just my two cents xo