WTB New/Used UPS 600VA

Want to buy a UPS new or used that could provide about 350Watts for about 2 hours, NOT for any sensitive electrical device like routers or computers

and what would a new UPS, that fulfills my requirements would cost me, please suggest make, model and where to buy from...

P.S. : I can only buy from people/shops in Islamabad or RWP...