It may sound expensive if all you're doing is trying to combat boredom. However if you intend to make an RV purchase in the near future it's a small price to pay to visit all the different makes and models available. You might even be able to pick the brains of a few factory reps to get their opinions on specific makes and models, and even get some insight as to what's coming down the pipe.
It would take several days and more money for gas to visit the dealers individually, and you still couldn't make side by side brand comparisons.
The price to visit the show is less than a couple cheap tickets to a professional baseball game, less than half the price of a single ticket to a pro basketball game, and wouldn't even pay the parking at most NFL games.
If you want expensive look up what it costs for an evening dinner and a Broadway play. For the price of an evening in NYC you could take your wife and 50 of your closest friends to the RV show and still have a couple hundred dollars left over for beer to wash down the bad BBQ sandwiches.