The Book Thief Pages 154-167

SPOILER ALEARTIf you have not started to read this book, and have stumbled across this blog, be warned, there are some spoilers in these passages. 
The Book Thief Pages 154-167
This first part of the section raises some questions. How much is a pfennig worth? Why did the shopkeeper not explain to them that they did not have enough and just gave them a piece of candy? If a pfennig was worth that much, why did Liesel and Rudy treat it like more, regarding the fact that their families are relatively low on money. I find it interesting that the book about hitler was introduced by "The Book Thief Productions". Is it intended to be a little joke? We are back with Max, who is reading the book. This also introduces Walter a bit more. Max is at a train station now. How did he get there? Was this were the locked door led to? Why is Liesel still so loyal to Author's gang that they would injure a person to show their loyalty. I guess it makes sense, though, that they are loyal, but looking outside of the current situation, I think it is a bad idea. I hope that if you have stumbled across this blog post, and have not read this book yet, that you will be inspired to read it with me.