After buying Whole Foods in 2017, Amazon made a couple of bold pronouncements about lowering prices at the grocery chain. It made a third this week, saying that it was offering lower prices on hundreds of items, especially fresh produce, without going into much detail. It is also giving more special discounts to people signed up for Prime, the company’s membership service.

“We will continue to focus on both lowering prices and bringing customers the quality they trust,” John Mackey, the chief executive of Whole Foods Market, said in an announcement.

But we wanted to see for ourselves if a typical grocery bill would change much.

To test the new prices, we selected a baker’s dozen of the types of items we buy all the time, not necessarily the fresh produce that would be the focus of the price changes. Eggs? Check. Milk? Check. Beer? How could we go without?

We bought those groceries on Tuesday at the Whole Foods across the street from Bryant Park in Manhattan. Then, we bought the same ones at the same store on Wednesday, after the price cuts went into effect. We did not apply a Prime membership to either purchase.