B&H is excellent. I also tend to go directly to manufacturer sites. They may actually use Amazon for fulfillment, but you can be assured that the product you get, is real.

I generally don't go for extremely reduced prices. I find that it is way too easy for scammers to take advantage of us, not paying too much attention to something we get at a good price.

Every. Single. Time. that I've gotten a "great deal" on something, it has turned out to be fake.

I have a pair of "Nike" shoes at home, that are obvious counterfeits. I still have the original Pegasus 30 shoes, that I got over ten years ago, at a local store, and they are actually fine. The soles got flat, which was why I wanted to get new ones.

The "Nikes" that I brought from Amazon, a few years ago, crapped out, after just three or four months. They actually cracked.