Not that I've actually sold anything for the past month (personal seller mainly selling old clothes, everything on Buy it Now so the items just sell whenever). Presumably as long as post offices are open then I can still sell things? I live within walking distance. I can't print postage labels at home as I don't have a printer.
But people who become ill are being told to stay at home for weeks.
Not that I'm actually expecting to sell anything in the current climate, but you never know.