Oh, Tom.....that's horrible. I am so sorry you're without your collection.
I don't know if you're interested in brand-new books or okay with used ones that are in good condition, but I've always had luck with Dark Delicacies in Burbank, CA. The books I've bought there are in great condition, always with jackets, and are reasonably-priced. I even have two first editions (luck of the draw) that were purchased there. The owners are really cool, friendly people - it's a store that specializes in horror, not just Halloween merchandise, so you can also find other horror authors there. Ask if there are any signed books, too, because they have signings there all the time.