Econos Co., Ltd. engages in the e-commerce business. It offers platform for selling and buying of used goods. It operates and manages websites such as BOOK-Off, HARD Off, Off House, Hobby Off and Garage Off. BOOK Off provides buying and selling of used books, CDs and DVDs. HARD Off offers used PCs, audio systems, musical instruments and cameras. Off House offers fashion clothes, interiors and daily necessities. Hobby Off offers candy toys, card and character figures. Garage Off offers car products and the spare parts. It also involves in carbon offset provider and environmental consulting business; sales and repair of telecommunication devices and their peripherals. The Company was founded on March 21, 1964 and is headquartered in Sapporo, Japan.