Vitacost is a necessity for me at least once in two months, sometimes more often. When corona pandemic struck us in spring, I became a much more frequent shopper online for everything, including vitamins and supplements.
Let's start by acknowledging that antibiotics don't fight viral infections and thus wouldn't help had you contracted the novel coronavirus. The key to prevention is staying home and treating your body right with foods that will strengthen your immune system and will get your body back up if you do end up sick.
I like my vitamins delivered, period. Going to Whole Foods and spending an hour looking through all the shelves just to find what my family needs is too much trouble for me. Amazon is too expensive, so I stopped ordering from there.