Still a problem with rolled coins - how can the cashier tell that a roll of quarters doesn’t have only 38 in it, or 10 Chucky Cheese tokens, or a couple of French francs? She’s still got to open them and count them.
The cashier can put the customer’s name on the rolls. Now, if the customer obtains the property by false pretenses, that is fraud, a crime. If we’re dealing with that sort of question, the customer is just as likely to shoplift the stuff she wants/needs. Nevertheless, I see your point.
They can weigh them at the service desk they know what each should weigh and also they make you put your name and phone number on the rolls just incase.