I did a business survey a while back. Maybe some of the info will be helpful?
http://newburghrestoration.com/blog/2010/06/23/newburghs-business-scene-survey-results-part-iii-2/
http://newburghrestoration.com/blog/2010/06/22/newburghs-business-scene-survey-results-part-ii-2/
http://newburghrestoration.com/blog/2010/06/21/newburghs-business-scene-survey-results-part-i/
I only went to Moo & Oink a few times. I think they failed to mix high and low end products. It should’ve been a place that if you forgot to buy a can of beans or wanted cheese or chips and dip you could go there. But I remember one person telling me that his bag of salsa and chips was over $10. They wanted to patronize it but it was too expensive. I think if you spend a full day walking up and down the street, talking to people, you might get a better idea of what people are willing to buy. Set up a table and chair on a corner and ask people what they think.
I also happen to know a vendor who has a lot of Italian packaged products that would like to open up shop. Maybe you should talk to each other…if the pantry idea becomes your plan.