as stated, I am amending the contracts & wages. this should bring down the difference. Most of them have amateur contracts in rela life. (and as the leagues name states)
costs for youth depend on the importance of youth for the club & intake of them. This is generated bij the game, taking in account different acting values.
maintenance depends on all sorts of stuff (renewal date of the pitch, weather, if the surface is known as ok or not...) this is generated by the game itself.