I had a season ticket at St Mary's last season, only missed a couple of games.
Broja was brought in as an alternative/backup to the established strikers there but from his first touch as a sub looked far more dangerous and direct.
He has pace, can run with the ball, turns well, is selfish, sulks when asked to play wide, can press, great shot on him, fell out with the manager (cue more sulks), holds the ball up well, good passer (when he bothers).
I think other clubs also found him out a bit, big difference from being a unknown youth at the season's start to being seen as the main threat at the end. He was well marked towards the end of last season, didn't prosper.
You're paying as much for potential (a bit like Gordon) though with the right service he will get well into double figures this season.
Comparisons with a young Shearer are silly. Plus Shearer scored 18 goals at Saints in the season before his Blackburn transfer.