Title: Hellboy: Seed of Destruction
Issue:
Variant: HC
Barcode: NA
Description: Limited Edition 1:1000 Signed & Numbered Slipcase Hardcover
Cover Artist: Mike Mignola
Publisher: Dark Horse Comics
Release Date: October 1994
Country: USA
Format: Slipcased Hardcover
Pages: 144
Script: John Byrne
Plot: Mike Mignola
Artist: Mike Mignola
Colours: Mark Charello
This has been added in “Hellboy: Seed of Destruction HC / TP” but without the slipcase as the slipcase is not the actual book. All other info has been added! Thank you for posting 
@CLZ_Justin, that makes sense, I will bear that in mind for the future when adding books.
It looks like it has mistakenly added as at Trade Paperback, instead of a hardcover or slipcased hardcover. The cover price was also $99.95 when it was released.
My bad, both have been added and fixed