[ceejayoz]

A lot of Amazon users get daily/weekly drop offs, and increasingly via Amazon’s own logistics.

Seems fairly trivial to have those drivers pick up last week’s carriers when they drop off this one’s.

[bentcorner]

They did that with Amazon Fresh, and (at least from my perspective of several years ago) I think the asymmetry between # of packages and frequency of delivery didn't work out for them that well. We'd end up holding onto a stack of 4-5 crates for a week or so, which means Amazon would have to float probably a ton of these across their customers. That's all a guess though, but these days we get deliveries in plastic/paper bags, no reusable containers, so something must not have worked out.

That said, grocery delivery is much more "bursty" than package delivery.