This is what is inside a legitimate Apple MacBook charger (after removing the thick copper shield). Circuit board is double sided with surface mount components. The legitimate charger contains a circuit which prevents a defective charger from damaging your $1,500 MacBook.
This is what is inside a counterfeit Apple MacBook charger (with no copper shield to remove). Circuit board is single sided with NO surface mount components. It contains no protective circuitry to prevent a failed charger from damaging your $1,500 MacBook :
Which one is the better deal? Unfortunately, the counterfeit charger is a visually excellent fake. You will not discover this until it damages your MacBook.
Be careful buying cheap MacBook chargers.