Dhalgren, with a foreword by William Gibson, is $1.99 right now at Amazon:
What is Dhalgren? Dhalgren is one of the greatest novels of 20th-century American literature. Dhalgren is one of the all-time bestselling science fiction novels. Dhalgren may be read with equal validity as SF, magic realism, or metafiction. Dhalgren is controversial, challenging, and scandalous. Dhalgren is a brilliant novel about sex, gender, race, class, art, and identity.