On-line retail store services featuring a wide variety of consumer goods of others; On-line retail store services featuring refurbished and pre-owned graded mobile computers consisting of smart phones, laptops and tablets; Operating on-line marketplaces for sellers and buyers of goods and/or services in the nature of smartphones, laptop computers, tablet computers; Providing a buy-back program for used personal electronic devices of others; Online retail store services in the field of downloa...