Books about DID?

I would second the got parts? recommendation. It is quite readable and contains lots of useful information.

I don't know where you live, but usually at your local booksellers', you can ask for them to order in books (no shipping cost for you).

I have seen several autobiographies of people with DID in the psychology section at Barnes 'n' Noble, including Sybil and When Rabbit Howls.

Also, is it a credit card thing or an address thing (the not-buying online)? If it's a credit card thing, you can buy gift cards for Amazon.com in local stores (e.g., drug stores) to use online, so you would not have to use a credit card. But you would still need to give them an address...