You should keep poking a stick to their side, start citing California Consumers laws (even if you don't really know what those are). They can't apply one standard for some and another for someone else and don't disclose it. That's the key here TRANSPARENCY & DISCLOSURE. Who knows when "a handful of trusted sellers" balloon to dozens or hundreds at their discretion.I recently purchased a Chanel bag from a "verified and trusted pro seller" in Chicago, Illinois (COCO-LUXURY,) only to discover when shipped that it was coming from China. I haven't received the item yet, but this has left a bad taste in my mouth. It isn't even the fact that it is coming from China, because I have purchased items from Asia in the past without problem. It is the deception that really bothers me, especially for an item so expensive. I called Tradesy and they gave me the song and dance about only a handful of trusted sellers being allowed to do this. I'm considering trying to dispute the charge on my credit card to receive a refund, because as is the item is only returnable for tradesy store credit. I am also having it authenticated by a third party seller, but even if it appears to be authentic, I'm not sure I'm comfortable with this.
It'd bug me too, if I wanted to buy from Japanese sellers I go to Rakuten or eBay and be fully informed where my shipment is coming from. Moreover, the parcel could run into delays and whatnots at US Customs if the duty forms aren't marked correctly, or worse get lost during transit.