Most top teams in competitive countries buy players around their 23/24
Not in Australia
and i thought that most top teams buy players who already have their primaries trained, such that they can train secondaries, because this is easier to train.... but then this does not add that much salary, so the training exception is minimal. they have to do this in order to remain competitive.
I know what ur trying to say, but the reality is different, at least in Australia.
Number 1 team in Australia roster - http://www.buzzerbeater.com/team/196370/players.aspx - Mostly older guys ( in fact, only one guy that he appears to be training).
Number 2 - http://www.buzzerbeater.com/team/38913/players.aspx - Is actually looking at SELLING his 25 year old trainee's, rest of the guys are old.
Number 3 - older guys, BUT probably does have 1 guy who is 27 who is getting secondaries trained.
So yer, my evidence is based on Australia top leagues (even div II), but I assumed other leagues around the world operate the same, could be wrong, but i doubt it.