I've got some unique stuff up for auction right now, including:

Atari Jaguar 1993 CES Press Kit

Atati Jaguar 1995 Set of Four Direct-Mail Postcards

Dragon's Lair (Sega CD) 1993 In-Store Demo Disc

Virtual VCR: Colors Of Modern Rock (Sega CD) 1993 Mail-In Offer Exclusive Disc

Sonic the Hedgehog 2 1992 In-Store Hanging Mobile

Sonic the Hedgehog 1 (Genesis) 1991 Alternate International Artwork Game with Box/Instructions

...and some other stuff too. Check it out if you get a chance!