I'm excited to see that today's Kindle Daily Deal is 14 books by Philip K. Dick at $1.99 each. I won't pick them all up, but I'm looking forward to suggestions from members at KindleBoards for the "essentials."
From Amazon's author page for Philip K. Dick:

Philip Kindred Dick (December 16, 1928 - March 2, 1982) was an American novelist, short story writer and essayist whose published work is almost entirely in the science fiction genre. Dick explored sociological, political and metaphysical themes in novels dominated by monopolistic corporations, authoritarian governments, and altered states.

In his later works Dick's thematic focus strongly reflected his personal interest in metaphysics and theology. He often drew upon his own life experiences in addressing the nature of drug abuse, paranoia, schizophrenia, and transcendental experiences in novels such as A Scanner Darkly and VALIS. The novel The Man in the High Castle bridged the genres of alternate history and science fiction, earning Dick a Hugo Award for Best Novel in 1963.

For more on Philip K. Dick, see his author page on Amazon.

The books that are part of today's Daily Deal:

A Scanner Darkly
The Man in the High Castle
The Three Stigmata of Palmer Eldritch
The Simulcra
Now Wait for Last Year
The Penultimate Truth
The Divine Invasion (Valis)
The Transmigration of Timothy Archer (Valis)
Flow my Tears, The Policeman Said
Counter Clock World
Eye in the Sky
The Exegesis of Philip K. Dick

All books have text-to-speech and X-Ray enabled. There are Whispersync for Voice (Audible) versions available at a reduced price for some, not all of the books.

Happy reading!