Let me tell you something that might surprise you.... other peoples pictures are often used to sell other "brand name" product. I hope I didn't crush your dreams with that one.
Let me also educate you on chinese manufacturing vs what "MIG" likes to say is built in Russia.
China has the biggest manufacturing companies in the world and also has the most people to actually work in them.
("China tops the list when it comes to manufacturing. The country makes up 28.4% of the total global manufacturing output, which adds a total value of nearly $4 trillion to the world economy." Just a quick google)
China is also the largest country to COPY everything ever manufactured from anywhere in the world.
So once we know both of those things, why would you say that everyone on those chinese ebay sites are "RESELLING" the real MIG that was supposed to be manufactured in Russia.
I'm pretty sure the ones for sale on those chinese sites are either the REAL THING from the real chinese manufacturers or they are copies and they are using pictures that can easily be found on Google.
Just accept the fact that most of you won't get your MIG that you pre-ordered from scammers based in USA or the UK as the original suppliers are not sending them to those countries right now cause they can make more money just selling it themselves from China!
My "educated guess" seems way more possible then yours.