Amazon’s Kindle e-book reader has sold out despite scepticism about whether the device will prove popular. A notice on the Kindle pages on the Amazon web store said “heavy customer demand” for the device meant it would be out of stock until 3 December.

Since its launch on 19 November the device has been widely examined but opinions about it are mixed. It has won praise for being easy to use but many have criticised the way it forces people to pay for free content.