The Lovecraft eZine is hosting
a sale on 20 Lovecraftian titles for about $1 apiece. The catch is that the titles are available in bundles rather than individually. The base bundle is 5 titles for $5, and each of the succeeding three adds 5 new titles and $5 to the price, so if you want something that's exclusive to the highest tier, you'll have to buy all 20 books for $20.