Alan Moore is best known for his award-winning graphic novels like The Watchmen and V For Vendetta, but he has also written great prose novels, and they are on sale at huge discounts at Amazon.
The biggest discount is for his epic three-volume novel, Jerusalem. The full novel is over 1,200 pages long and tells a story that spans several centuries, and melds stories of Moore's childhood home in Northampton, England, with occultism, mythology, and theoretical physics. The paperback collection normally sells for $35, but you can grab it at Amazon for just $10 (with $4 shipping). Alternatively, you can buy it directly from Amazon for $18 with free Prime shipping--just make sure to choose Amazon in the "Other Sellers at Amazon" box.
Some of Moore's other prose books are also available at Amazon, including the short story collection Illuminations: Stories and the novel Voice of the Fire.