The countdown deal is where your book goes up at a discount price for a set time (complete with a ticking clock), then goes up to a slightly higher price for a bit, then ends up at its original price when the promotion is over.
So today and tomorrow and a little more than that, Dragon's Debt is only .99. In a few days it will be $1.99 before finally settling back to the original price of $2.99. Not huge differences, but hey, a sales a sale!
You can purchase the book through the link below.
Dragon's Debt (The Dragon and the Scholar)