I have downloaded several of the retro-clones but I have never purchased a print copy. Through a book trade with a fellow blogger I have a copy of Swords & Wizardry: Complete on the way. I had attempted to get a copy but I could not find one because it was all sold out everywhere. Then I stumbled on to the chance to trade some of the works by a few of the Appendix N authors and a few of my unused gaming items for a copy. Pretty excited about checking it out since I downloaded all of the Swords & Wizardry pdfs to help with a project I am working on. A print copy will make it much more convenient.