Why? No one at Barcelona is upset because they didn't scout Suarez from Ajax, Madrid fans don't care that Ramos was bought for a huge fee from Sevilla, or that DDG will cost them huge money, Juventus didn't bother trying to find another player who's almost as good as Higuain but not as expensive.
Sometimes big clubs just identify the player they want and write the cheque to get it done. Right this minute, Marcelo is probably the only better LB in the world than Sandro, and there's not much in it.
It's almost impossible for us to get cheap players. Directors of Football have literally said publicly that they just whack 15m on if we're the club interested, and if you have to pay bloated fees on the gamble that is a young promising player, you might as well just pay 15m more and try to go for the already world class.
That's been the case for a while and is one of the reasons why we've seen the club go for very young players like Unal, Roberts, Moreno etc. Get them 2 or 3 years earlier than when we would want them.
No one wins awards for net spend at the end of the season, I've spoken before about not liking overpaying because of the incredible pressure it creates for a player, but if Pep identifies someone as a must have, you just dump a bag of money on Marotta's desk and say thank you very much.