The integrity of B&H over my years of ordering from them is literally unparalleled in my experience. Only if I can’t find an item from them will I check elsewhere at this point. If Amazon wants inspiration as to how to do things right...

I also have never had issues with REI for sporting goods/outdoor gear, or Barnes and Nobles for books.

If I can avoid Amazon I will, if I can’t I try to order directly from the manufacturer and no other seller.

I just wish there were more options :/

Often when I try to find something just a little bit out of the ordinary, Amazon tends to be the only option.

And when there is another option, even something like best buy, their experience can be pretty bad (my best buy account is in some sort of limbo where I have been able to create it but can't access it .. so I have to do all my purchases in guest mode).

Sometimes you can find a merchant on Amazon, search for its name (they are not allowed to link), then buy from the merchant's own store.

For any readers from Germany, booklooker.de is great for books. You can buy used and new books with an extremely efficient, no-nonsense user interface. Fulfilled by large and small bookstores and even private sellers. You see the actual vendor before you buy.

eBay is generally where I go for those kinds of things, as I get granular control over exactly what I'm buying.