But he mistakenly dropped a nine from the $3.299 a gallon in the computer, making the price of gas .329 cents Monday night.

He left about 10 p.m., but drivers could still use their credit cards to buy gas.

Those that did got a bargain, and word spread fast.

Forty-two people bought 586 gallons of gas in an hour and 45 minutes.

Local police saw the hoard at the station and called store manager Andrea Reuland.

She went to the station and pushed the emergency stop.

"There were cars two deep at each of my pumps," said Reuland, who knew many of the drivers.

One person had pumped 27 gallons and two purchased 18 gallons.

Reuland told people they were being dishonest - the main store sign had the correct price.

"I was very upset that there's that many dishonest people," she said. "They knew there was a problem, and they took advantage of an employee's mistake and I think that's terrible."