I am put off by the proliferation of these "vanity galleries" that charge $30-40 per image, limit the size of frame, and put up 80+ artists for a week or two. If I do the math correctly, they are probably pulling in over $3000 of artists' money for that show, for unknown amounts of promotion. Most of the artists are just starting out, or amateur "wannabes" who haven't bothered to look into how the art world works. A local one lasted about a year (good riddance) - I wonder if any artists actually made any money.
The local art shows are a different matter. I know what I am getting for my entry fees - booth/exhibition space, visible promotion, staffing, etc. etc. .