For me it isn't just saving the time invested in the six hours of the show it's self. It is time invested in prep, in my own advertising, in getting up early and getting there, in set up and break down time, in what I could have been doing instead. It is also the energy I put into prepping for a show, the products I make for that show, the wear and tear on my vehicle, my self, my assistant, the people my friends and customers who I ask to come, it is also the emotional burn out from doing a bad show, and how it is preceived by the general public if a show isn't successful. and everything else.
For me, paying a lot of money for show does not mean it will be successful. I don't know anyone for whom that is true.