This is the thing that will make their costs much higher than they could be:
The market freezes their meats so they last longer, buys bananas at their greenest and takes the tops off beets and celery to extend their freshness. Scraps are used to feed the chickens and sheep of a volunteer, so nothing goes to waste.
I think that this is an admirable goal, but if they instead got things like the meat that hadn’t expired yet but wasn’t fresh enough for the supermarkets to want to sell, they’d save a lot more money. Those can be frozen just as well as fresher meat and the meat itself will go to waste.
That probably isn’t a good bet with a lot of produce (although some of that would work too), but for meat it definitely would be a good idea and it doesn’t sound like they’re doing that or it would have gotten a mention.