Also, upon reading the info for the smiley-face show, I note that the art shown there is insured (for 60% of the value/selling price), and that they encourage sales and take a 40% commission.
I compare that to another show in which I was rather expected to have work, which took a 40% commission and offered no insurance whatsoever- all work was in non-locked cases and displayed at the artisan's own risk. Plus it had a really tiny window for picking up one's work, after which they took possession of it. Which were 2 reasons why I did not put work in it, particularly since the work I'd rather planned on showing was not inexpensive!
Clearly, it behooves one to read the fine print.