Just a word of caution on the "barter" idea.
This Guy recommends that it is better, at least at first, to just have everything you and your family need and don't depend on barter.
Bartering requires that you leave your home. Dangerous.
You also advertise that you have excess goods. Dangerous.
True, but the coming collapse isn't going to last a few months. We're staring down the barrel at a decade or more of horribly bad economic times that will likely make the Great Depression look like a walk in the park because the majority of our population now does not know how to be self sufficient. Back during the Great depression there were still a lot of small family farms. My mother and father were both young adults during the Depression. My father lived in Atlanta and he and his mother had a very rough go of it. My mother, OTOH, lived on a small farm. She told me once that they were so poor and so used to doing for themselves when the depression hit they hardly even noticed. Nowadays, we have a huge chunk of the population that has never tended a garden, never preserved their own food, doesn't know how to entertain themselves without TV or the internet. Those people are going to suffer big time. Then, there is the welfare brood mare dependent class. They'll be the ones responsible for the cities burning when the checks stop coming.
I agree it is dangerous advertising if you have excess supplies and in certain incidences in certain places it will be dangerous to leave home. Eventually, though, folks are going to have to start bartering because stuff is going to run out. I envision bartering more services for goods, as opposed to goods for services, anyway.