More like Never Too Expensive

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CoDominiumUniverse
universe98 books1971
Military science fiction.
“The body of work runs along a few hard threads rather than one line.”
from the catalogue
Start with The Mote in God's Eye →
includes Moties, Falkenberg's Legion, War World, Laurie Jo Hansen
Known SpaceUniverse
universe142 books1964
About aliens.
“Give a clever species a few centuries and a working fusion drive, and it will fill the sky with problems.”
from the catalogue
Start with Ringworld →
includes Ringworld, Fleet of Worlds, Man-Kzin Wars
FoundationUniverse
universe123 books1940
About robots.
“There is a science that reads the future of quadrillions the way an astronomer reads the orbits of stars.”
from the catalogue
Start with Foundation →
includes Trantorian Empire, Foundation, Second Foundation Trilogy, The Collected Fiction of Isaac Asimov, The Positronic Robot Stories, Foundation (Original Stories)
PolityUniverse
universe72 books1992
Science fiction and space opera, set in far future and other star systems.
“The Quiet War is already over by the time you arrive.”
from the catalogue
Start with Shadow of the Scorpion →
includes Ian Cormac, Transformation, Spatterjay, Rise of the Jain, Time's Shadow
Heaven Chronicles / Zones of ThoughtSeries
series8 books1976
Science fiction and space opera, set in far future and space.
Start with The Outcasts of Heaven Belt →
UpliftUniverse
universe13 books1980
About uplift and aliens.
“No species, the Galactics insist, ever climbs to sapience alone.”
from the catalogue
Start with Sundiver →
includes Uplift, Uplift Storm