October, You could say that this is probably the rarest Warren book out there. At least top 2. It has a dismal print run of 400 copies. I'm not even sure how they were distributed to newstands? Maybe just on the East Coast. But Warren, printed this book in order to secure the name House of Horror. If you had heard, Warren had done some work in the European market working with some of the Hammer Magazine groups out there. Where there was a little bit of a falling out as I understand, and Warren caught wind that they were going to create a new magazine titled House of Horror. Well they did, but Warren got the rights to the name first so the House of Horror Mag that was created by the European publisher had to pull their copies immediately. There might be some corrections to be made in that statement, but that is how I understand the situation.
As for value, it is really up in the air. I've seen copies go as high as $450+ in stated FN/VF, but they dont come up too often. So I've only seen 2.
-bounty
Bounty (as usual) is on the mark with his info on this lil gem. That being said, let me interject my ego err opinion. Its definitely a rare Warren book, the print run gurantees as much but it is by no means the rarest... Being that 'House of Horror' is a non-comic it opens the door for rarity comparsions with all Warren mags. This includes the original magazine 'After Hours' adult magazine. I'd daresay that few (if any) on this board have ever seen an 'After Hours' #1 in person. Also, the Vampirella HardCover had a run of 500 (of which almost half were destroyed when they came back from the printer). And then there is the insanely troublesome Eerie#1 which I have given up on as I will never be able to convince myself on the authenticity of any of these copies that find their way to market. The Illustrated History of Heidi Saha is another that deserves mention, however for the most ridiculously rare Warren we have the '1961 Famous Monsters Convention Book ' which was handmade, only 3 exist and they are all in Forrest Ackermans personal collection. Woe to the Warren completist.