On: How Amazon Tricks You into Thinking It Always Has ...

[cowsandmilk]

in my experience, they want you to just buy high price items online.

(a) Free shipping at $50.

(b) limit on quantity of item purchased (e.g. only 4 bags of flour at time)

So, you cannot purchase large quantities of a single low priced staple, you have to buy 4 of a lot of items. Or buy high priced items.