This is one of many exploitative habits of Amazon. Others include not ensuring products follow regulation, eg on hazardous substances (lead, etc), or on electrical safety. They also make your local {book, game, hobby, ...} shop go bankrupt.
You don't -have- to buy there, if you have the financial means I urge/recommend/encourage you to buy locally or from a responsible seller. Even if they are slower, less things on offer, etc. You probably already know some small local stores you would be sad to see shut down. Support them! (if you don't already)
> You don't -have- to buy there, if you have the financial means I urge/recommend/encourage you to buy locally or from a responsible seller
That is assuming the component is even available locally or from a responsible seller. I live in a small city (half a million people). It is often impossible to find parts locally even for popular products that were purchased locally. Then there are parts where it is impossible to find official replacements, either because it is outside of the product's support windows, or because the replacement parts were never available to start with.
For some kinds of things, I don't have a local store that sells it. Maybe that's less of an issue if you live in big city, but not everyone does.
> follow regulation
This one bit me recently when I bought a package of budget light fixtures (in Canada, from amazon.ca) and then my licensed electrician informed me that he wouldn't be able to install them as they didn't have a CSA or UL mark. (edit: originally I had mis-recalled and said CE here)
To their credit, Amazon did allow me to return them without penalty, and now my review there warns other consumers that those are only for DIY use and even then you are risking your home's insurance coverage.