Eva, since your score is tied 2/2, it sounds like you'll need to evaluate each venue. I've only been doing shows since Oct. 2012, but my first show, I sold one bracelet...but it was a very small "expo" of women...would I go back there this year? Yes, because I support the event, sponsors & attendees. Plus, my jewelry designs have evolved, my displays are better, I know what to promote & how, etc. So I would anticipate a better outcome.
The last show I did in Feb. was at a church bazaar and I didn't sell one thing! Even though I have a range of styles & price points. I was unpleasantly surprised! At out-door events, I have a tent, 3 large tables, one small table & chair for my "office", banner, jewelry displays, etc. and I do all set-up and tear-down myself (except getting help from neighbors with tent). It's a lot of work, and with no sales plus entry fee (no greater than $50 so far), I am losing $$, so wouldn't go back to smaller, less promoted events.
But I am grateful for them for the experience w/o the pressure of dozens or 100's of people at my booth (this last one was my first windy day, so lots to learn there!...decorative duct tape is all I can say!)
If I were doing an in-door show with one table, an easy set-up, low entry fee, I may very well try an event more than once even if sales were low or zero. Hope some of this helps!