when the Federal Govt announce price of any commodity that is applicable uniformly across the country. The difference of 0.20 to 0.49 cents is a variable offered by the stations owners. any difference above 0.50 cents controlled price is crime and shall be reported to area Deputy Commissioner(s) as they are responsible to manage Govt announced price control.
In case of Pakistan the smuggled iranian fuel is sold at much lower prices at fuel stations across balochistan, as well as at highway stations over border towns of sindh & punjab connecting with balochistan.