Amazon, Smart Camera and Door-Ring Manufacturer Have Purchased Blink

Amazon, one of the world's largest e-commerce giants, bought Blink, which produces intelligent home security systems.
Blink has announced itself as a young venture founded in 2014, driving a security camera market with affordable and important features. After the Kickstarter campaign, Blink went on to produce more advanced security cameras and video door killers.

Amazon was buying Blink when it was approaching the end of the year. While the purchase was announced on Blink's website, the money paid for this new venture was not disclosed. However, Blink did a pretty good job, even though it was 3 years after he got out of the way.

Blink stated that it will continue to support its products and customers, and that nothing will change at present. Blink is likely to continue to sell its products in the upcoming period, and Amazon is said to be able to beat its own brand. How much could Amazon have targeted this purchase?