It's an age old cliche, but if that type of player was at a Spanish club, with those six pointers you raised, no one would bat an eyelid, infact, many would say it's exactly the sort of signing we should be making and wouldn't give a fuck about the price.
It's laughable, people were kicking up a fuss about us not going the extra yard for Willian and Salah, yet Lallana is overpriced. While many I'd wager had actually seen little of those two players, but were more keen on the actual idea and glamour of the signings, rather than the reality of whether they were worth the money and suited to this team.
Lippy makes a good point, you can't really judge many investments like that until a couple of seasons down the line, assuming that they don't do an Aspas and bomb in the first season, which is unlikely.
As I've said before, for all his "I hope he does well" posturing, Modo seems pretty intent on being ready to show Lallana up to be a flop, just to prove some petty point. Like the England games during the World Cup, being a case in point - "I'd rather see highlights of what he did for England during the World Cup, than a highlights reel of how brilliant he was all season for Southampton".
Wait until the friendlies start and every microsecond of his game is dissected, next up he'll have a signature devoted to him.