I ordered mine from amazon. I didn't know what shenzen was and don't normally care who the seller is because I've never been burned like this.But then the customers must also be willing to pay the costs for such customer service.
Manufacturers in the EU and USA calculate at least 10 - 20% of the product price for such a service, which will not be enough given the low sales prices of SMSL, topping, etc. Just look what the Schiit products cost at the official EU distributor, that's the surcharge.
I don't know how it is in the USA, but in the EU every customer has the possibility to buy these devices from dealers in the EU, with service according to EU standards. Only as examples are there Clear, HiFiStudio79, Audiophonics, Soundimports, etc., or Amazon as a seller.
If you save the last few euros and order on another continent, you simply have to assume that you save on service and bear the return costs, even in the case of a guarantee.
I wasn't trying to "save a buck" - this is who was selling it on amazon