Barnes & Noble’s Nook E-reader is now $20 less than it used to be, Mashable reports. The bookseller cut the price from $99 to $79 to compete with the Kindle which is $69 (without a charger) if you don’t mind ads. The ad-free Kindle is $99. It’ll be interesting to see how Amazon reacts to this competitive pricing strategy. Barnes & Noble, along with traditional publishers, is locked in a war with Amazon over the e-tail giant’s underpricing strategy with respect to books. The bookseller has refused to sell Amazon Publishing’s print titles, forcing Amazon to seek brick and mortar distribution of its print books in Europe.