Buy and Sell Devices We Sell refurbished Devices with 30 days’ warranty. You can sell your Computer, Phone, Tablet, Game Console etc… to Roz Hi-Tech. It takes just a few minutes to sell it and upgrade to another one or get cash. It is FAST, EASY, SAFE. We Buy Broken devices Whether it’s smashed, soaked or just plain dead, we’ll pay cash for any broken device models.