Cord blood banking. Isit really necessary?

Yes.. I stored with different companies for the 3 kids. To us, it's another form of insurance, though it's still a relatively new field. The fees range from 4K to 6+K depending whether you are storing cord blood only or with cord lining as well, and whether you are paying annually or upfront 10 or 21 years, and whether you are a returning customer.