about 800-900 pages
Priestess of Avalon has 382 pages.
The Guns of Avalon has 180 pages.
Ancestors of Avalon has 363 pages.
Mutants in Avalon has 80 pages.
Lady of Avalon has 464 pages.
Pearl in the Mist has 384 pages.
Swords in the Mist has 190 pages.
The Land of Mist has 294 pages.
Lud-in-the-Mist has 319 pages.
Fire in the Mist has 304 pages.
The Sons of Avalon Saga has 304 pages.
"Soldier of the Mist" by Gene Wolfe has approximately 384 pages.