As of now and as per Shell official store, its price is 3629 PKR / 4L, (Source []() ) which translates to around 907 PKR / L.
You can do the price comparisons between Shell, Total, etc.
It has been almost an year. I suggest you change the oil ASAP, despite the fact that it has only run 2800 Kms.
Usually, 5000 Kms / 06 months (whichever comes first) is the criteria for changing engine oils.