Allens Python Lollies selling at 50 cents

This is a discovery a customer made at the Coles Macquarie Centre . He is not sure if it is an error from the scan that is going to be fixed soon but for now, he noticed that the Allens Python Lollies are selling at 50 cents even though on the shelf it is written $2. It may be a pricing error but the fact is when you check it out the scanner says it costs 50 cents so you only end up paying that much. Concerning the expiry dates, all lollies are said to expires in 2016 so you have enough time to check out the store and grab a few lollies.