Everything you said in your first post is meaningless. "A sellers" description of his games is useless. If you want to pay those types of crazy high prices, stick with an established reputable restorer.
"high end restored" is probably a load of bullshit. There is a reason people buy games from people like Chris Hutchens, Brian Kelly or the Treasure Cove guys. People might not always agree with their prices, but you know exactly what you're getting.
"High end restore" from "a seller" sounds like a sure fire way to get screwed.
Besides, what is an electronics upgrade to a CPU board in a system 11? Does that mean he bought a rottendog board? Does it mean he did a remote battery holder?
If this guy was legit, he would say things like "had playfield touch up and clear coated by X" Notice how there is no mention of new ramps or plastics etc.
My 2 cents.