I had sold alot on ebay (not chips) over a 6 month period. I couldn't make it to the local P.O. one day (and they check everything) so I stopped at the P.O. near work. A small place out of town. My ebay labels must match their zip so they get credit for the package. Anyway they were slated for closure a couple of years ago and liked it when I brought 30-40 packages a week. They never checked anything, just said thank you. By the way they are still open.