Are A bodies more popular than B bodies?

Not only has the price of an "A" body gone up, the value certainly has as well.
My insurance company came out and appraised both of my cars last October.
I got the appraisals a couple weeks ago.
Keep in mind insurance appraisals are generally higher.
My 74 Duster /6 car that really could stand new paint, appraised at $10,450.00
My 75 Dart true survivor 4dr 318 appraised at $16,500.00
That last one shocked the hell out of me. I figured maybe $10K at the high end and only because of what it is.
The Duster appraisal is also pretty dang high. I thought it would be in the $7K to $8K range.
I have mixed feelings about these. On one hand, it a good thing for me, on the other, it distances an entry level car to someone wanting to get into the hobby.