I do not intend to hurt you, but usually, after market items mostly never pay back, however good, luxurious and costly they are.
You may open PakWheels / OLX used cars calculator, apply different filters, and see / check, what are people demanding for the cars matching your car's condition.
you may demand accordingly, and then sell based on your priorities.
Still, I would sincerely suggest to not get panic, and not sell your car right now.
I hope, it helps and guides. Thank you.