The Audran Sequence (Used Hardcover) - George Alec Effinger

3 novels in one hardcover edition.

When Gravity Fall, A Fire in the Sun, The Exile's Kiss.

"In the 23rd century, when plug-in personality modules are as easy to obtain as gender reassignment, pleasures are cheap and death is easy. Marid Audran has kept his independence the hard way, selling his detection skills in the slums of the Budayeen. By his standards, it's a comfortable life. But his hard-won freedom is about to be tested ..."