it is working like this.
It's about fast trainers , who can gain 1* per season so you can keep them for some extra years (and here is the challenge to find them and train them) and the slow trainers.
Yes, speaking of fast trainers: do you think this guy is a fast learner:
In my market I have seen some young lads 5* going for $3m - $4m. I figured those are the fast guys. And this fellow from my Assistant looks cheap.