Even if you don't need it often, it could be handy to have a 5m type 2 m-f handy when the only free charger is Iced and you are desperate, a granny cable is not much use in that situation.
I have a tethered Rolec attached to the side of the garage, the rolec has a latching dummy receptacle for plugging in the tail plug when not in use.
Two nights ago I backed in to the space beside the garage, and went to plug in, but could not get the tail out of the receptacle, hmm bad, I am immediately thinking of ways to remove the receptacle. I decided to first try WD40, sure enough that worked.
I then went to plug the cable in to the van, and found another problem, the cable no longer reached the charging socket, that's when I noticed I was parked on the cable! I could not get it out of the receptacle cos the cable was being tensioned by my clumsy parking. Moral....
On the subject of low cost Ebay cables, why should it be of lower quality than the MG supplied cable, both probably came from the same Shanghai factory.
Pete