You can buy Apple iPad here:
Order Apple iPad Apple iPad Tablet (16GB, Wifi)
Order Apple iPad Apple iPad Tablet (32GB, Wifi)
Order Apple iPad Apple iPad Tablet (64GB, Wifi)
Order Apple iPad Apple iPad Tablet (16GB, Wifi + 3G)
Order Apple iPad Apple iPad Tablet (32GB, Wifi + 3G)
Order Apple iPad Apple iPad Tablet (64GB, Wifi + 3G)