That is how I feel about book signings! I enjoy doing them and am glad book stores host them, but you just never know how they will turn out.
I feel my book signing in Chicago was a success. I had two books left on my table when the signing ended and due to my difficulty in walking and the location of the conference book store, I never went back to see if those two copies sold. Here is a picture of my signing table. Isn't the poster that Harlequin sent neat?