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http://www.reuters.com/article/2012/...84D0YM20120514

(Reuters) - Amazon.com Inc will launch new versions of its Kindle e-reader and tablet, including a monochrome e-reader with front lighting, a source who has seen the prototype told Reuters.

"They can afford to add a front light because the component is not very expensive and their display otherwise uses very little energy," said Colegrove.

An increase of about $10 above the current prices should be "quite reasonable," she said.

The source said Amazon was likely to keep prices the same, or raise them by a very small margin, if at all.