Here's comes the second significant price drop to grace our pages today: Amazon has taken a $20 chunk out of the price of its Kindle and Kindle Paperwhite e-readers, meaning you can get them for as little as $49 or $99 respectively. As with similar discounts in the past, this new pricing won't last forever -- it's presumably timed to attract shoppers looking for Mother's Day gifts. (What? You hadn't forgotten, had you?)