If only, I was a milkman for a while and there used to be milk vouchers worth £2.80 (7 pints), which obviously gave the recipient a pint a day. Some people had more than one voucher dependent on how many kids they'd produced.
Now with most people it was fine but the problem starts when the local shop is allowed to also except them (for milk) but decides it is a good idea to either sell the milk or do them as let's say £2 for cash.
Easy decision for the punter £2 towards your fags get your milk from me and don't open the door when I call for the money.
Always someone out there who will take advantage of the situation. Who's to blame milk token recipient or dodgy shop owner.