Illinois code is probably similar, but this could be prosecuted as fraud in Georgia.
TITLE 16 - CRIMES AND OFFENSES
CHAPTER 9 - FORGERY AND FRAUDULENT PRACTICES
ARTICLE 4 - FRAUD AND RELATED OFFENSES
16-9-50. Deceptive business practices
(a) A person commits the offense of using a deceptive business practice when in the regular course of business he knowingly:
(1) Uses or possesses for use a false weight or measure or any other device for falsely determining or recording any quality or quantity;
(2) Sells, offers, or exposes for sale or delivers less than the represented quality or quantity of any commodity; or
(3) Takes or attempts to take more than the represented quantity of any commodity when as buyer he furnishes the weight or measure.