I'm pretty sure the golf courses are highly subsidized. And, honestly, there are over 250+ thousand registered firearms in the State of Hawaii, you can probably divide that by 4 or 5 to get the # of gun owners as a estimate. I know far more gun owners than I do golfers (and I know quite a few golfers... especially military ones). You really can't consider just the 'range' fee though. There are GE taxes from all the tourist purchases, fuel, rental cars, etc. etc. that need to be factored in. Just like we may "lose" money directly on the pro-bowl, but then make it up on all the other tourism, sales, and other stuff for a actual net gain and profit.
The lead / haz material is bullcrap. We can logically assume because we have never seen the bulldozers and other stuff coming in that it is a BS figure. Additionally, they have like two huts, and two crappy bathrooms. I am willing to be that a majority of those figures for electricity and others are to power the district park side - not the range. My computer costs more to run per day then all the electronics at Kokohead (I don't think I am kidding either... 1000w power supply).
If we had a full facility and it was as well taken care of as a golf course I guarantee we would still fill that place to capacity. Too many people are wholly discouraged from going to the range because they 1.) can't get a table, 2.) they can't really shoot what they want or at a distance that is really feasible, and 3.) they can't make the hours. Also don't forget, this is 'our' land, not the city and county. There are gun groups that would be more than happy to run the range for the city. I can guarantee we would do a better job - for less money.