I’ll chime in that if you have the Target Red Card (which can be a debit card, for the credit card averse), you get free shipping on any sized order. I used it quite a bit for bulk and staples when I was living without a car. Also, you have to be careful to search out their brand of products as the website shows name brand items first.
They also had an easy return policy that was extended even longer for Red Card orders, so I had a nice long window to make returns though it was inconvenient to get to the store. ETA. Most items are returnable by mail, some just in store. It’s very easy to miss that detail.
——
As for Prime, I’m grandfathered in on a family plan, so I get the free shipping without the media content, so I can’t comment on the content, just the shipping. 5-6 years ago it was worth it. Now? Not so much. They very often require a minimum $25 spend (yes, with prime) and in my rural area 2 days shipping was promised but usually 5-7 days.
(Is it possible that the minimum spend thing is just for family members, not for the main account holder?)