I currently have all of the following books up for grabs on eBay:
Campaign Setting (Boxed Set)
Doors to the Unknown (Shrink-wrapped)
Faction War
Fires of Dis
A Guide to the Astral Plane
A Guide to the Ethereal Plane
Harbinger House (Shrink-wrapped)
Hellbound - the Blood War (Box Set)
In the Abyss (Shrink-wrapped)
In the Cage - A guide to Sigil (Shrink-wrapped)
Monstrous Compendium Appendix 1
On Hallowed Ground
Planes of Chaos (Box Set)
Planes of Law (Box Set)
Something Wild (Shrink-wrapped)
Tales from the infinite Staircase
The Deva Spark (Shrink-wrapped)
The Eternal Boundary (Shrink-wrapped)
The Factol's Manifesto (Shrink-wrapped)
The Planewalkers Handbook
Well of Worlds