well, I tried to use the "we'll ship it some day, eventually" option...it lasted about 18hrs and I had to switch back to the Prime 2-day. I was going to take around 10-days to arrive. I would not mind if they still processed the items over the weekend as other options but, well, just no...actually, hell no...
I order a LOT (easily $10k/yr) from Amazon because it saves me time. I don't have time to drive to get items I can order at 3AM when I remember something I needed. At which point it simply shows up.
I still might try it out but I am betting it will be soon they start to put that very same $35 minimum order to get that whole dollar back because people are going to start placing 12 orders for the dozen items they otherwise would have purchased at once.