What should you do. Send a message to the seller telling them that they are not using e bay to their best advantage. I don't think so.

I think that if you do the research, you are entitled to the prize.

I think that you have a lot of knowledge to know the different makes let alone know when the seller has made a typo or spelling mistake. Knowledge is power.
Some sellers will only sell to their own Country. That's just as stupid because they miss out on international customers and higher prices.

Some sellers advertise every piece of junk that comes through their hands.

It's a market place. Let the buyer beware. Don't you worry about your good fortune or knowledge.