'round here you have to pay for a permit to have one, or else the city can (and will) cite you and it's like a $500 fine. Permit costs something like $45 per day and specifies that your sale must take place between certain hours (8-4, I think). To hold a two-day sale over the weekend would cost me 'bout $90 just for the permit. Will I even sell $90 worth of junk? Maybe break even if I'm lucky? Costs nothing to just put that junk in the alley.