The best way for me to share how inexpensive shipping is through Amazon is to tell you about my son. One of my sons hobbies is to build custom made and designed Gaming desk top PC computers. By the time he was 19 he had is APlus certification as a Computer Tech which meant he could build computers from scratch or install DSL lines or all sorts of other computer and internet related stuff.
He also like to study programming languages like C, C++ etc at the time too.
Well he and I thought about building a custom computer for the first time and he and I both realized that he could buy parts, even exotic parts for his computer through Amazon Prime in building a specific Gaming PC desktop computer for a friend. So, the actual cost would be around 500 dollars less to do this through Amazon than it would be anywhere else as long as you were ordering all parts through Amazon Prime. So, the custom computer he built cost him only 700 dollars in parts rather than 1200 to 1500 with shipping costs which are free over Amazon.
So, this is one page at random of presently 20 pages sold from Whole Foods Products sold now through Amazon:
Search results
65-80 of over 20,000 results for "whole foods groceries"
Product Features
... RXBARs are whole food protein bars made with egg whites, dates, nuts ...
Exclusively for Prime MembersAmazon Video
$0.00Watch with a Prime membership
by 365 Everyday ValuePepi Super Stores
Apr 10, 2018by PepiPlay
by 365 Everyday Value- by Gorilla Decals$6.99+ $2.67 shipping
Sponsored
by My Nutrition Advisor
Sponsored
by Back to Nature- $13.35$21.99Get it by Tuesday, May 1FREE Shipping on eligible ordersMore Buying Choices
Get it TODAY, Apr 29 - by Mind ReaderFREE Shipping on eligible ordersSome colors are Prime eligibleMore Buying ChoicesProduct Description
... all other models in the market. fresh coffee is the whole point, right? ... 
by Farmers Market
by Whole Foods Market
by 365 Everyday Value
