Buy the softcover of Madness: The War of 1812 now at Amazon for $19.13, which is $9.86 off the publisher's list price. The Kindle version costs $8.49, a 71-percent savings off the paperback list. Check out Amazon's allied bookstores, and you can get a softcover for less than $7.
And while you're on my book's Amazon page, check out the positive reviews. Add your own, too.