no.
so far I have managed to get every Amazon item we want with zero shipping, just by collecting them together to satisfy Amazon’s minimum purchase requirement (or by buying them elsewhere, which we are doing more and more now that Amazon has raised its minimum purchase for free shipping).
That’s what we do — collect enough items in the cart that are tagged as free shipping by Amazon totaling $49. (Not all items fall into that category.) We regularly get our pet food there, coffee K-cups on “subscribe and save”, vitamins, some electronics, linens, and varied other items.
I’m considering Prime, though, for streaming and the obvious shipping savings over time.