There is no getting away from the fact that he has cost a fortune, and for a player with some limitations.
But, the boy scores goals, and that is all that matters to a striker and to the buying club.
He will keep Villa up, and of course he can do nothing about the price that the clubs have agreed.
Good business for Sunderland strictly in terms of finance, but they will have to replace him, and quickly if they are not to slide down the table.