A younger 5* can win perfeclty 120-150 of progress in the 30% hard training thats 1 cone for sure with 1 training, or 1 green.
With the personal trainer 1 cone = 5 Tokens, with 5 tokens = 5 greens
so, here the differance.
Maybe pay 5 Tokens for 1 cone is worth when you have a younger of 9*-10* that win less than 20 of proggress in 30% hard training because you don't have injured players using the personal trainer so you save reds (or the tokens that costs these reds)...
Too personal trainer is for millionarie guys. Or to train this player with 30 of age that you love a lot and it doesnt matter to pay 100 euros to train him.
(-.-)'