I bought an Ipad off ebay and while I do like it, it doesn't have a SIM card? How do I go about getting one? How much will a SIM card run me? Before I get crucified I bought from ebay because I couldn't find one locally and it was only 600 dollars (16gb 3G). This was our first Mac product and it was so nice we bought a Macbook pro the very next day! Definitely no going back to pc... Looking forward to being a positive member of the MAC community. Any light you can shed on my problem would be GREAT. Many thanks in advance.