I hihgly doubt that, the antique cars used a combined total 0f like 20 gallons a day if that, plus had a crew of either 3 or 4 working the ride.
IJ has a higher crew number, so that cost more right there, plus firing those LIMs arent cheap. I know with Flight of Fear each launch used about 3 MegaWatts of power, IJ probably uses less than that though, but you also have to remember, the Propane used for the fire scene and all other effects, resulting in more technicians needed to work the ride, and get it ready each day.