You probably also do not pay those Chinese vendors for that service. Cheap is cheap.
The old argument for why IBM PCs (pre-Lenovo) cost more than a competitor was that they guaranteed the supply chain to exist when a repair was needed across your whole fleet of deployed machines.
Similarly, Winnebago RVs have a specific quirky reputation that the manufacturer holds on to molds of all previous products essentially forever, so they can re-manufacture parts to things that haven't been in stock for years.
The old argument for why IBM PCs (pre-Lenovo) cost more than a competitor was that they guaranteed the supply chain to exist when a repair was needed across your whole fleet of deployed machines.
Similarly, Winnebago RVs have a specific quirky reputation that the manufacturer holds on to molds of all previous products essentially forever, so they can re-manufacture parts to things that haven't been in stock for years.