For a street fair? I wouldn't any invest any money for a street fair - that's just my opinion. I don't think your return would justify the overhead you would supply. Now, if you are doing show's and these type of set-ups a lot - then maybe. But I see so many people sitting on old packs when I go to stuff like this.
If your target is young kids, say 5-12 - I would stay away from Magic and focus more on Pokemon and Yugioh (and more recent stuff (but it's not cheap).
If you are able to get toys at cost, I would look into getting some Blind Bags Displays: Lego Mini Figures, Star Wars Angry Birds, My Little Pony, Kre-O Transformers, Star Wars Fighter Pods Battle Figures, Littlest Pet Shop, Heroclix etc. I tripled my money on Ebay with the Star Wars Angry Birds (after fees). So they are great to have and cheaper than packs.
Currently looking for the following comic Books:
United Comics: 21,22,23,24,26
Tip Top: 173 & 184
Peanuts 1 (1953)
Peanuts: 1-4 (1963-64)
Last edited by Zerokruel; 01-17-2013 at 12:50 PM.