Stumbled across this on eBay and went “Hmm, that’s pretty close to a great deal!”, then made an offer that was accepted.
Wagner, Karl Edward. HorrorStory Volume Four. Underwood-Miller, 1990. First edition hardback, #82 of 300 signed, numbered copies, a Fine copy in a Fine dust jacket and Fine- traycase, with just a touch of blunting at points, a touch of edgewear around spine label, and a trace or two of wear. Omnibus and first hardback editions of Year’s Best Horror Stories X, XI and XII. Signed by Wagner, Harlan Ellison, Dennis Etchison, Michael Kube-McDowell, Richard Laymon, Michael Swanwick, David Drake, and many others. Chalker-Owings (1991), page 441. Supplements the trade edition. Bought off eBay for $65, or less than half the original offering price of $150.
Now I guess I need the limited editions of the other two…