Answer:: Around 85000 PKR
I previously had cg 125 2010 which I sold for 53000,
1) Purchased cg 125 2006 for 25000 rupees from a friend,
it was in rusty and poor condition
did some work to make it look better
2) purchased brand new imported engine for 35500 rupees
3) Engine Fitting, 8 AH Battery and new silencer costed 10,000 rupees,
4) Front wheel was upgraded to bigger drum as there was small drum in 2006 model, complete wheel with hub, plate, brake shoe, fitting costed around 4000 PKR
5) Around 5000 was spent to make it look better which consist of fuel tank, side covers, seat, meter, chain cover paint.
So, complete bike cost was b/w 80k to 85k rupees, but it is much better than cg 125 special edition original version which is available for around 1.5 lac rupees, as It has OHC counter balancer engine which produces more HP, acceleration, consumes less fuel and control vibration.