[thaumasiotes]

> I suspect that would ruin their whole 2-day/1-day shipping bit.

They are no longer offering 1-day shipping. When I signed up for prime, one of the benefits was discounted 1-day shipping on items for which the free 2-day shipping wasn't fast enough. I recently had need of that, and learned that the options are now (1) "prime shipping", with no particular service guarantee. There is no second option. I contacted customer service multiple times asking why I couldn't choose 1-day shipping and was told "because the item is out of stock. There is only one item left in stock, that means the item is out of stock".

[crooked-v]

I've seen 1-day and even same-day shipping on a variety of items, so I suspect it's determined by some arcane combination of user location and item logistics.

[chc]

They used to offer guaranteed two-day shipping and a paid upgrade to one-day shipping; now they just have "Prime Shipping" as the parent said, and what "Prime Shipping" means varies from item to item and time to time. It can mean one-day. I don't think I've ever seen same-day shipping, but I'd imagine I just don't live close enough to a fulfillment center.