Having covered Amazon Prime Day for as long as we have, we know what to expect. One thing that's almost always certain — Amazon is going to drop prices on their Kindle e-readers. The longest Prime Day ever is now underway (through July 11), and we're seeing lots of discounts roll in on the popular reading devices.

Every summer season, Kindle sales are the highest because people organize vacations and do not want to lug around stacks of books. The Kindle is the perfect travel companion: it occupies virtually no space, is as close to reading a real book as can be, and can hold thousands of books.

Carry your personal library without weighing down your beach bag or backpack. And do it for less if you act now.