Data on how much offering a print-and-play copy helps a Kickstarter campaign:
http://www.jamesmathe.com/does-a-print-play-version-of-your-game-help-sales/
Tips & Resources for Board Game Designers
Data on how much offering a print-and-play copy helps a Kickstarter campaign:
http://www.jamesmathe.com/does-a-print-play-version-of-your-game-help-sales/