Did you buy Threadbare at your local game store or convention? Threadbare RPG participates in Bits and Mortar, a program that gives you the PDF with any retail purchase of the print version of the book!
I just need a copy of your receipt, or have your friendly local game store contact me to let me know you bought it. I’ll need your email address where I can send you a DriveThruRPG coupon code or the PDF. Send the information to me at mortaine+threadbarebnm -at- gmail.com.