Martha has that awkward nervous laugh and a really bad hairdo.
Yeah, very true, but
1) She can tell ya how a VOR works in 23 different ways. I bet you can't do that.
2) The two of them have made enough to buy an old Falcon jet. I bet you can't afford even a very used one of those.
3) I leave it to you to guess which of the two of them runs their household (and their relationship). And which of the two of them takes the dog out for a walk.
I wonder if the Kings are millionaires these days or if they are just "more well off than the average educated person" kinda people...
I think the Kings were in the right place at the right time, many years ago, and did a load of self publicity. Their products work well in the FAA system where there is not much ground school structure and the exams (flying and ground) are largely competence based.
They are millionaires many times over.