I was a vendor at a craft fair today organized by a local lady in the next town over from mine. There were 70 vendors (!), the weather was great, we were inside a nice building with lovely amenities and good parking...and everyone's sales were abysmal. I made four sales, all to friends. The ladies at the tables around me made one or no sales...even the lady who organized the whole thing didn't sell anything! There were lots of people wandering around looking at stuff, but only the two cupcake vendors seemed to be moving any product. (Mmmm...cupcakes.)
This was my first craft fair, so I don't have anything with which to compare today. There were lots of different types of crafts available, most of them looked like good quality stuff, and there wasn't an overload of any one kind of craft - people just weren't buying. I didn't really pay that much attention to how this event was advertised. I told my friends about it, none of whom at heard of it through any media sources. This may have been the real problem - not enough marketing. (This was also the first year for this event.)
I am posting this rather dismal note so that anyone who is gearing up for a craft fair in the near future can try getting the word out about it a little more aggressively than I did. And good luck!