In first world countries, buying from a local reseller grants you customer rights (like returning or replacing defective items).
In first world countries, buying from a local reseller grants you customer rights (like returning or replacing defective items).
Not if the local reseller simply calls itself a marketplace and logistics company and the local regulator lets them get away with it.
Amazon, in my experience, does arbitrate disputes about returns and defects, but the important point is that from a legal perspective, I don't think they have to, so you're at their mercy.
You can't even be sure that VAT is handled correctly, which local retailers can usually not get around.