Lowest price on regular gas in NJ, $2.89 per gallon. Highest cost, $4.89 from you'll never guess who, Exxon! Whooda thunk it? Of the 15 stations with the lowest prices, none are Exxon. However, Exxon occupies 7 of 15 slots in the highest priced stations in the state. Now, the low-price stations are not Joe's Gas, but companies such as Gulf, Shell and Sunoco. "Exxon: Solving the world's toughest energy challenges." Right. sure.