Smart phones, tablets and other unused gadgets lying around your house may be worth more than you think.

A number of websites have popped up, wanting to buy them for cold hard cash.

The companies refurbish them and then resell them over the Internet.

Israel Ganot runs the website Gazelle.com which buys back unwanted gadgets.

Consumers are blown away by how much they can get for their devices and it's usually much more than they expect.

The market for used smart phones appears to be strong.

We think the big chunk of those customers want to buy used phones because that's what they can afford.

Even damaged gadgets are worth good money.

Amazon Nextworth is another Internet company that buys old devices.