In its ships at Indian ports, Iran has offered Indian government-owned refineries nominal discounts in price as well as free deliver of oil. While free shipping alone could save Indian refiners about $1 per barrel in transportation cost, the discount in price would boost margins on processing Iranian oil.
Though it has not stated in firm terms, Iran has it has indicated its willingness to sell crude oil to Indian refiners at price lower than internationally traded rates. The Persian Gulf nation already sells crude oil to India on a 90 day credit period.