Here's the reason the charge for signing someone in is reasonable....
Say you and I are members, we pay £180 a, year which equates to £10 per game.
You take a guest to every game at £5 a time...... That's a guest using the club for £90 a season.
Now members, like me, could be pissed off that a non member gets to use the club for half the price of a member.