This is a sticker with Pam’s handwritten, personalized message to you, intended to be placed within one of her books (although you can do whatever you want with it).
This is a COVID workaround to enable you to get an autographed book more quickly and with less hassle. You will need to order the book separately. To do that, start here.
The price includes the cost of mailing the sticker to an address outside the US. If your address is in the US, check out the item called “Handwritten dedication sticker (US addresses).”
On the checkout page, there is a notes section where you can communicate any special instructions such as the name of the person the book (sticker) should be dedicated to, or if the shipping address is different from the billing address.