Auke Teeninga wrote:How will the VO in question know that those books are actually owned by that player and that he won't sell them after the sheet is signed?Well, so much for that idea. But even if that's the case, it can't be more cost effective than buying the PDFs.
That would depend. Let's consider the most degenerate case: All 25 regulars at a local gamestore chip in and buy a copy of the book together. They each get their VO to sign off on the sheet in turn, trading the book around behind the VO's back. Then, they generate their own (inaccurate) version of the rules text that favors them, and provide it in a clear and legible manner to the GM. When they are all done getting it signed, they resell it, let's say for half, and split that. So effectively everyone paid 1/50 of the full price, and the GM doesn't have the correct version of the rule in question available to consult.
Clearly, this is not something most people would do, but at the point that it is possible, it's not much better than just using the honor system.