Authors, if you're planning to run a Kindle Countdown promotion, do not expect a dramatic increase in visibility on Amazon without further promotion. There are already thousands of Countdown deals running. To stand out from the crowd, you will need to find other ways to inform readers that your book is on promotion.

Here are some sites that appear to list price drop promotions and their requirements.

UK

Indie Book Bargains accept books priced up to £2.99. Those with good review...