How do I purchase 2 dollar bills?

See the Related Link below. I bought them for my whole family (including me) for Christmas.

If you're willing to get some circulated ones, check with some larger banks. They should have them in stock or be able to get them for you at face value. Remember that any circulated $2 bill dated 1976 or later is only worth $2 and is unlikely to go up in price in the near future.