MG want to shift the ZS models as they have a new one on the way, they must have stock of the long range, hence the offer, damned good deal, my son loves his ZS EV, spacious, comfy and been reliable for him over the past couple of years.
I doubt they would apply the fees, seems an oversight by MG rather than overt discrimination.
In life, it's not who you know that's important, it's how your wife found out.