Especially for audio/video/photo stuff there's a bunch of dealers just for that, which tend to be quite good (in terms of prices, packaging, customer services), and also specialized distributors ("sells small numbers to professionals"), that's why I'm surprised people go for Amazon.

Some examples:

Random camera: Amazon: 2000 €, any photo dealer: 1800 €

Random high-end lens: Amazon: 2500 €, photo dealer: 2000 €

Random microphone: Amazon: 275 €, A/V distributor: 220 €

Studio microphone: Amazon: <not authorized to sell>, A/V distributor: 600 €

And that's before considering that Amazon is probably going to ship more slowly (even on prime) than most other "pro" dealers, and that Amazon is probably going to throw a box in a more or less empty parcel, while someone at a proper dealer will actually bother to package the stuff correctly.