Twowolves
Explorer
While I agree that a PDF is no substitute for a physical copy, especially for a rulebook, keep in mind that players don't need all the rules from the $10 PDF, at least not right away. One copy of the PDF + cheap printing means any given player can just have print copies of the sections directly relevant to his character and nothing more. A 1st level dwarven fighter only needs the section on dwarves, fighters, and maybe a couple of pages on his feats and equipment, for example. If the players like the game enough before they hit, say, 5th level (spellcasters starting to need LOTS of pages for spells by then, I assume), then they can switch, but until then, it's not a big investment for a game for which they already know 90% of the rules.