Amazon’s Kindle Paperwhite is now at its lowest price ever of $99.99 (£79.99, ) for the Wi-Fi only edition – that’s down from $119.99 (£109.99). Bear in mind that new Paperwhite price comes ‘with special offers’ – which basically means ads on the lock screen when you’re not using it. If you don’t want to be pitched products pay an additional $20 (£10)...