Jack Vance books in order
27 books in the catalogue, about 202 hours of reading in all; the shortest takes 3 hours and the longest 16 hours.
5 series and 18 standalone books in the catalogue.
Gaean Reach
6 books
Trullion: Alastor 2262 4.7 h Marune: Alastor 933 length not known
Maske: Thaery length not known
Night Lamp length not known
Ports of Call 5.5 h 
Lurulu 3.8 h Lyonesse Trilogy
3 books
Alastor Cluster
4 books 1 Trullion: Alastor 2262 4.7 h 
Wyst: Alastor 1716 4.6 h
Trullion: Alastor 2262 4.7 h 2 Marune: Alastor 933 length not known
3 Wyst: Alastor 1716 4.6 h Phaedra: Alastor 824 length not known
Demon Princes
5 books 1 Star King length not known
2 The Killing Machine length not known
3 
The Palace of Love 3.5 h 4 The Face length not known
5 The Book of Dreams length not known
Cadwal Chronicles
3 books
Standalone books
Dying Earth - Baen 3.1 h 
The Dragon Masters 4.3 h 
The Hugo Winners 5.9 h 
The Hugo Winners, Volumes One and Two 15.6 h 
The Star King 3.8 h 
The Eyes of the Overworld 3.5 h 
Science Fiction Hall of Fame--Volume Two B 9.8 h 
The Gray Prince, A Science Fiction Novel 3.5 h 
The 13 Crimes of Science Fiction 8.4 h 
Cugel's Saga 6.3 h 
Lyonesse Series 8.0 h 
The Fantasy Hall of Fame [22 stories] 7.9 h 
Bakers Dozen 11.2 h 
Rhialto Marvelous 4.2 h 
The Fantasy Hall of Fame [30 stories] 10.3 h 
Masterpieces of Fantasy and Wonder 12.0 h 
Tales of the Dying Earth 13.8 h 
The Jack Vance Treasury 13.4 h