Welcome to a capitalistic free market. The value is determined by what others are willing to pay for it. If the price of trainers is too high currently:
1. Wait until the demand settles
2. Decrease the level you want
3. Earn more money and buy one at that price
Just because you want to pay less money for higher quality things doesn't mean you get to.
2x NBBA Champion: S55, S56. 3x USA Cup Champion: S54, S55, S56. WR for longest home streak ever at 11 in Season 47.