The Kindle retailed for $399; Amazon subsequently lowered the price to $359. Amazon does not sell the Kindle outside the United States as Whispernet only works in the U.S. Plans for a launch in the UK and other European countries are being delayed by problems with signing up suitable Wi-Fi operators. The CDMA technology in the Kindle does not allow for its use in the UK due to the lack of a CDMA network operator in the UK.