The cocaine was only worth about $10, but possessing the illegal drug cost George MacKenzie Brookins hundreds.
Brookins, 31, was fined $500 for possession of a controlled substance.
He was charged after police found a small bag of cocaine in his wallet on April 13.
He told police that he picked the bag up off the floor of his store, but did not know what the substance was.
Brookins, however, pleaded guilty in court Monday to the possession charge.