According to consumer electronics resale site Glyde.com, not many iPad owners have put up their tablet for sale since Apple sent out an invitation yesterday to a special event on Oct. 23 where the long-rumored iPad mini, with a 7.85-inch screen is expected to debut.

FORBES: For Those Ready To Trade In iPad For A New iPad Mini, It's A Seller's Market

The portable dual-screen system lets users see 3D images without the use of special glasses, while providing them with a wide variety of gaming and entertainment options.

ENGADGET: Nintendo bundles red 3DS with Super Mario 3D Land starting November 23rd