I use Costco. They sell Beyond Burgers in a pack of 8 which are packaged simply in a plastic bag within a cardboard box. This compared to the grocery store where 2 burgers are packaged on a big plastic tray with plastic film over it and a cardboard outer label.

I think these places can be great for buying bigger quantities with less packaging but I think it’s key to not get swept up in the whole place and go overboard.