Responding rapidly, Amazon.com then cut the price of its popular Kindle e-reader below the Nook, to $189 from $259.
The price cuts were made as manufacturers of e-readers faced a mounting threat from Apple’s iPad. Even though it is far more expensive than the e-readers, the iPad, which starts at $500, performs a range of functions with a versatile, colorful display that contrasts sharply with the static, monochrome screen of e-book readers. Apple said it sold more than two million iPads in the two months since the tablet’s introduction.
Read more here: In Price War, E-Readers go below $200