one thing it seems you generalize everything you have to say, if you look at the staff page you feel buyng level 4 or level 5 at 300-500k isnt a premium price at the middle of the season versus the start of the season. i am at no words right now.
If you're spending more than 50k to purchase a level 4 trainer, you're doing something wrong, end of story. I just checked for giggles and a 13197 salary level 4 trainer with no specialty just sold for 10k. That's certainly a low enough signing price and the salary is low enough that you can get plenty of time out of him before having to replace him (or choosing to if you check the staff market for trainers frequently).
you know the usual "MTU" sickness - stands for making things up
...
am i wrong to say you go crazy to buy a trainer at a premium for which has a salary that cant ruin your teams financials, through which at the end of the season see his salary demand slowly balloon to more than 50% than when just hired, for which the results of your training varies to the minutes you give that the results you get arent satisfying or goes slower as the years go by.
come on figure that out!
Speaking of MTU - to see the salary increase by 50% within 14 weeks, you'd need to have purchased a level 9 trainer (assuming the formula that the increase is 1.0075 + (trainer level * 0.0025) percent holds true for non-existent staff levels.
A level 7 trainer will see his salary go up 50% within 17 weeks, and a level 4 trainer takes 24 weeks for the salary to go up 50% (it's 20 weeks for level 5).