Also a great bundle, with extraordinary novels from Delany:
https://www.amazon.com/Novels-Samuel...in%3A618073011
Offering, Nova, Babel-17 and Stars in my Pockets like Grains of Sand, at only $2.99
And if you also like Silverberg, these two novels of the New Springtime series are also very good.
https://www.amazon.com/New-Springtim...YX42DVXYE6MXPM
at only $1.99
Got it while you can.
A pity for the world of Tiers, but I already bought it.