As Magister Nemo states, all e-copies of the book are illegal.
But there is no problem creating your own physical copy of the book for personal use. Many people here have made their own copies with leather covers, or commissioned someone to manufacture them a single copy of the book in accordance with their personal requirements.
"Spiral Out: a bleak, page-turning, unforgettable read. Existentialism at its most hardcore" - www.uvray.moonfruit.com