Thats only an argument if with a straight face you can claim he is on the same level as sanchez and the answer to that is clearly no.
But isnt the real cost that we become a club who just buy top players and never develop any. When you have seen players come through as youngsters and become a mainstay in the team, it invokes a sense of pride and loyalty etc. When you buy a full international who is already a superstar its not the same.