Most likely FAKE.

The following language is from eBay's site:

"eBay will not send you email that includes attachments and you will not be required to enter information on a page that cannot be accessed from the eBay site."

"When possible, you should avoid clicking links. Instead of clicking the link, you should copy the address and paste it into the Address/Location area of your web browser. While eBay may send email that contains links, the links are provided for convenience only. You will not be required to submit sensitive information if a direct link is provided to an eBay page.

"When possible, you should avoid clicking links. Instead of clicking the link, you should copy the address and paste it into the Address/Location area of your web browser. While eBay may send email that contains links, the links are provided for convenience only. You will not be required to submit sensitive information if a direct link is provided to an eBay page."