Barnes and Nobles via eBay has their Nook ebook Reader 3G+Wifi model refurbished for $99 (regularly $199 new) with Free shipping for a limited time.

The NOOK 3G+Wi-Fi eReader has 3G Wireless access with AT&T (No Monthly Fees), the nation’s fastest 3G network as well as built-in Wi-Fi allowing you to download eBooks in seconds. Get bestsellers and new releases, your favorite eNewspapers, and eMagazines all delivered fast and free via Wi-Fi. Browse the vast BN eBookstore and sample any eBook for free. Store as many as 1,500 eBooks, eNewspapers, and eMagazines on your NOOK’s 2 GB of internal storage, so you’ll never be without your favorites. Need more space? Just add a Micro SD card.

Certified Pre-Owned Nooks undergo a comprehensive 14 point inspection, rework and verification process performed by Barnes & Noble certified technicians to meets the highest standards of quality. Both models come with 90 day complimentary phone support, unlimited online technical support, and one-year limited warranty.

Updated: Buy.com also has the Nook ebook Reader 3G+Wifi model refurbished for $99 (regularly $199 new) with Free shipping for a limited time.