Here's a
freebie.
It's
A D*mn Close-Run Thing: A Brief History of the Falklands War, by Russell Phillips. Amazon sells the Kindle mobi for $2.99. The book's got decent ratings between them and GoodReads. It's probably a PDF. My guess is that the book rarely gets marked down.
Get it by going to
this Shika Publishing webpage. Look in the top lefthand corner for more information. Alternatively, you can click on the "free ebook" link at the top of
the page. Although the ebook is
free, you do have to sign up on a mailing list to get it.
Unfortunately, I can't get the ebook free, because I'm already on the mailing list.