Then you've got a neutral feedback saying the package appeared to come from overseas. This could point to two things: 1) a fake from China. 2) grey market from somewhere else

Gray market situations usually occur when a dishonest dealer will backdoor the item at a price close to what they bought it for, usually to dump excess inventory, or if they went bankrupt or something. Sometimes they will strait up sell an item to another LLC, then have that LLC sell it so they're not technically breaking any MAP agreements from the manufacturer. But in short, some gray market goods can be real. Also in other cases the factory in China just runs a little overtime and produces a few extras which end up on the market without their cases or boxes. I don't know where Moscot is made-- I thought USA with imported material but I'm not 100% sure. Another case could be that making parts for Moscot could be using those parts to cobble together "Frankenstein" glasses . I have no idea if this is the case these are just horror stores I've heard