Only pay $3.89 shipping per package in the USA.
Eternal Boundary (Planescapes Adventure), by
Planes of Chaos (Advanced Dungeons & Dragons, 2nd Edition: Planescape, Campaign Expansion/2603), by Wolfgang Baur, Lester Smith
Planescape Campaign Setting (Advanced Dungeons & Dragons), by David "Zeb" Cook
The Well of Worlds (Advanced Dungeons & Dragons : Planescape Adventures, 2604 Book and Poster Sized Map), by McComb, Colin