Not at all....employee set the price (on purpose or by accident) , consumers paid with credit cards with their personal data vs any tampering with pumps etc etc . No dark of night robbery. IMHO not a snowballs chance in hell of recovering their loss due stupidity or ignorance of an employee trusted to set such controls.
The mere fact that HOARDS of people showed up like in the days of price-fixing to get gas from this place - EVEN WHILE THE PROPER PRICE WAS POSTED ON THE STREET, OFF BY 1 DECIMAL PLACE - indicates the vast majority of them were being totally dishonest and knowingly taking advantage of the mistake. Thus, it is a form of stealing.
Actually there's an excellent chance of recouping their loss. Every transaction used a card account of some kind and recorded the gallons purchased and the price paid. If you bought 20 gallons at .329 per gallon ($6.58), it would be very simple to record an adjustment transaction of $59.40 to reflect the correct price of the transaction of 20 gallons at $3.299 for a total of $65.98.