If your Ebay vendor ships from Baldwin Park or Rowland Heights (East side of Los Angeles region) then regardless of the name, its likely one of many drop-shippers representing a Chinese-owned warehouse in the US.
My last time buying from a Rowland Heights vendor offering 'USA Stock, overnight shipping' got weird. No tracking for days then obviously in a FedEx trailer on a train. The daily updates hit a bunch of remote towns that could only have been rail crew change points or something. The western ones were all desert locations from Texas to southern California. Vendor told me he had sold his last one so he had to ship from his eastern warehouse. So much for quick shipping. And since the price was $18 when O'Reily wanted $90 for the same thing, likely counterfeit. It worked, so it worked out ok.
Then this week's purchase is strange. A 'USA Source' for a common diamond-face sharpening panel where most of the vendors are in China. Yup. Mr 'USA Vendor bearbear2010' now that I've ordered it,shows as:
Seller info
Guangzhou Luoshijia Guoji Maoyi Youxianzeren Gongsi
Panyu Luopu LIngnan Dianshangyuan, 1 JIe 5 LOU 51Hao
Guangzhou 510000
China
After 24 hours a tracking number has been issued but nothing yet shipped. I'm sure the drop-shipper simply ordered his supplier to fulfill the order.
May you live in interesting times ...
Old time Ebayer here too. 100% positive feedback. Selling since 1998, buyer before that. Back when anyone could write feedback for a vendor without buying anything.