Okay...so what would you do??

Okay, so what would you do....

As reported in the Ocala Star Banner:

Clerks at a Mobil gas station located at the intersection of Southeast 52nd Street and U.S. 441, made a major mistake on Tuesday with the gas price. According to sheriff’s officials, the clerks told them when they were changing the gas price, instead of putting $4.02, the figures read 42 cents.

The clerks told deputies that 30 to 40 vehicles took advantage of
their generosity before they realized their error.

The price was immediately changed after a customer told them about the
error.

After it was read at work today, there was some discussion as to who would tell....and who would not have told....what would you do?