I like to go here but I do have a question is it legal for some if these people to buy from grocery stores and resale it? I bought some produce and when I got home I saw that it had tags on it from a store I personally shop at.

I'm betting they are getting it free from Harvesters, which is a food outreach program. Very unethical, but legal. The rules to sell at the FM ought to be that produce sold should be home-grown, but maybe it does. I think ingredients for anything homemade, like jelly, could be store-bought. Maybe start asking booths where they get their produce.

Legal, sure. Ethical not so much. Consumers beware.