Ground maintenance match day expenses.

I'm currently playing with Ballymoney United in the third tier of Northern Irish football. Glebe, a club in the division above me, share my ground, paying us the princely sum of £1 a year. Here is my expenses screen:

Here is Glebe's:

Now, I can accept the difference in ground maintenance, it is my club's ground after all, but the match day expenses difference is insane. Am I paying for most of their match day expenses or something? At this level of football those costs are crippling. It's not as if I'm getting bigger crowds, they are in a higher division and the crowds are about the same. Why is there such a difference?