N.J. Stat. § 56:6-3
Every retail dealer who shall fail to post and publicly display, in the manner herein required, a sign stating the price per gallon, or per gallon and per liter, of all motor fuel sold by said retail dealer, or who shall sell motor fuel at a price other than the per gallon or per liter price, as provided in article II hereof, or who shall violate any other provisions of article II of this act, shall, upon conviction, be subject to a penalty of not more than $1,500 for the first offense and not more than $3,000 for the second and any subsequent offense, and his license shall be suspended for a period of not less than five (5) days nor more than thirty (30) days, and in default of the payment of such penalty shall be imprisoned for a period not to exceed 30 days. If there shall be a conviction upon a second or subsequent offense, the license of the convicted retail dealer, issued under the provisions and procedure in chapter thirty-nine of Title 54 of the Revised Statutes, shall be revoked by the Director of the Division of Taxation.
N.J.S. § 56:6-3