If you aren't handicapped, stop parking in handicapped parking spaces and you won't get an exorbitant ticket to pay. Yes, these tickets are made to be incredibly expensive in order to get the point across that it's a BAD idea to take a space away from a legitimately handicapped driver or their passenger.
No, it's NOT ok to park there, not even for a minute while you run in and get something, or go in to grab your child, or whatever, if you are NOT a handicapped person with the proper placard or state-issued license plates to identify you.