Specifically, a package of 3 bars of Cetaphil soap in my local walmart is less than 10$ to walk out the door with. Compare that to prices on amazon that range from the same price as in store, to over $20 with shipping excluded!
Another example, this time a slightly more bulk item, is ramen noodles [0]. They are around 20 cents a noodle in local stores, while amazon lists them around 50 cents per noodle (even in large 36 packs)
I was keying off of your "purchase regularly" comment. Either way, the only products that amazon seems to offer at a reasonably competitive price, factoring in shipping, is amazon basics items, and that's because they can do to the supply chain the same thing walmart did.
Eh. Books, water filters, video games, camera lenses/filters, bags, lawn fertilizer, shoes, movies. All of that stuff is definitely cheaper on amazon than anywhere else. Big ticket items especially. Factor in 5% back, and you get most of your tax, or straight up 5% off tax free items. Can't really beat 2day prime shipping, and no hassle returns.
When was the last time you actually comparison shopped? I don't find Amazon's prices to be particularly great in those categories, more than "average to poor." Your "free two day shipping" isn't free, it's prepaid.
For electronics, for example, I find that Newegg provides much better service and lightning fast shipping at compatible prices.
Also "stores" deliver too (target.com, walmart.com, bestbuy.com, etc).
I comparison shop EVERY item I purchase. I used to be a hardcore shopper on Newegg, Amazon will consistently beat them. Newegg went down that messy third party route, and it's been a disaster ever since. The shipping is hit or miss, Shoprunner is rarely supported since they began offering their version of prime, whatever it's called. I have "Keepa" notifiers on everything, and catch lightning/warehouse/price drops on everything. I'm definitely not going to go digging around Walmart/Target daily for $5 BluRay titles.
Another example, this time a slightly more bulk item, is ramen noodles [0]. They are around 20 cents a noodle in local stores, while amazon lists them around 50 cents per noodle (even in large 36 packs)
[0] https://www.amazon.com/Maruchan-chicken-noodle-soup-pack/dp/...