Speaker damage repairable?

[Kanifee]

A friend of mine has asked for some advice but frankly im clueless where matters like this are concernd, he has a pair of speakers which he loves, im unsure of the make but from all accounts there pretty expensive and he loves them to bits.
From what he has said he has had them a little while and recently his beloved child managed to ram her finger streight into the cone ??(i think thats what it is called, its the dome shape piece in the center of the actual speaker)
What he is wanting to know is if there is any way he can replace the part itself without having to pay a heafty repair bill, or even if its repairable?

 

[Kanifee]

basicly the cone on the main driver just looks unsightly now, he was just woundering if yo could purchase a new cone at some cost and remove the other carefully and glue the new cone in place. Not sure if that is even possible, maybe a larger cone or something, who knows lol!