I've never heard of that. I've heard of wine-of-the-month clubs and the like, but produce? It sounds like a bad deal anyway, if they send you bad stuff and you have no recourse.
It's more of this primitive showing-offness, for which the cooking and baking primitives, ever since the hippywife Mrs. Alfred Packer, are famous.
They live in a boat, and because there's not much room, all they can use for a refrigerator is a one-quart thermos jug. If it were any bigger, there wouldn't be any room.
Also, when asea, it's not as if they can hop into the car and dash to the grocery store.
And it's a way of saying they have money other primitives don't, because I'm sure mail-order produce aren't your ordinary 39-cents-a-pound strawberries or 10#-for-49 cents bags of potatoes.
And there's the element of heroic martyrdom in it: "See, since we're trying to save the environment by living on a boat, we're compelled to nobly make sacrifices, such as ordering fresh produce by mail."
The cbayer primitive's proving an easier literary muse than Mrs. Alfred Packer ever did, but out of my respect for her, I can't be as raucously ribald with her, as I had been with the hippywife primitive.