You can click on the book below to get it from Amazon:
You are in luck... it appears that you can still read it or download it for free online here and only here:
When Money Dies: The Nightmare of the Weimar Collapse
This book was out of print for a while, but now is being reissued. If you are interested, I suggest you grab the free e-book above while it lasts, as it will likely soon disappear since the book has gone back into print.
:)
Of course you can always buy a bookshelf copy from Amazon as it's cheap enough.
Rushdoony has a book from the 70s called "Larceny in the Heart." His basic argument is that it's immoral for a Christian to play the "I can beat this inflation thing" game. He says it's a fundamentally immoral thing and that a good man would have nothing to do with it, at least that's how I understand it. He backs it up with lots of Scripture. You can get it cheap on Amazon for kindle.