Perhaps instead of coming to ED with a rash that you have had for 3 weeks, an ingrown toenail, a mild headache, back ache etc the list is endless. All minor stuff can be sorted out at a pharmacy, or the GP?
However, if I felt like popping into ED to seek professional help then it would be appropriate to pay $7! And while I am waiting I could get myself a coffee, sandwich and bar of chocolate for $10. But this would be ok as I'll be too busy stuffing my face to think about the amount that I've just spent on food but never mind I'll still moan about paying a low fe of $7!!!!!!