The store I rarely go to is Walmart, but I suppose, upon examination, Amazon has pretty much done what they did, just Walmart did it earlier. They put small mom-and-pop businesses out of business. They pay so low that most of their employees are eligible for food stamps (SNAP card these days) and they've lowered the average income and economic power of a lot of small towns where they popped up because they are now the only game in town. They negotiated so ruthlessly with companies who were their suppliers that they drove many of them out of business. There used to be a robust Snapper lawnmower and power tool company warehouse near me in Fort Worth, but Walmart kept insisting they have their equipment made more cheaply (and of lower quality materials) in China so Walmart could sell them inexpensively. The company resisted as long as they could before going belly up. Just one of myriad examples.

Amazon CEO soon-to-be-something-else high on the food chain Jeff Bezos bought the Washington Post, and after a generous six month free trial people can subscribe to the digital version for $4 a month. It's a real bargain.   

They do take back returns very easily. I have discovered that if I deliver returns to the desk set up for this in the Kohl's nearby, Kohl's offers me a percent-off coupon to use in the store. I don't shop there often but when I do I've found things I needed (they are like many of the other secondary market stores that seem to get the unsold stuff from big department stores at pennies on the dollar and sell it themselves, like Ross or Belk or TJMax here in the US.)

They have shipped some very large items. I have a "standing" desk that has a sturdy steel base and a good-quality veneered wood table top that I needed help moving into the house (several boxes, shipped flat, and a lot of assembly was required.) Sometimes very small items come in absurdly huge boxes and I've joined folks on Instagram to shame Amazon for such silly shipping.

When researching new purchases I look at Amazon for reviews, but before buying I usually do a Google search to see where it turns up. If it is available locally for a price comparable to the online businesses, I get it locally. I have a number of online places I go to for specific items (like my sewing machine equipment pieces come from SewingPartsOnline.com because they keep high quality stuff in stock and the listings on Amazon are rather haphazard). They also have better prices on thread and their shipping costs are more reasonable than Joann.com. Amazon's thread prices are through the roof, no way I'd buy there.

Caveat emptor. Buyer beware.