Another thing i think you have to also look at is the type of parts in the car they can be two nova's same year and look the same but whats under the car and components also make a big difference in price .
fab 9" 4 link coil overs
ladder bar Dana
Brakes disc or drum or both
what type of electronics tire size you can get under the car wheels
There is a lot of factors that also play into the price of the car.
When i had my nova for sale there was a lot of people call or email and tell me that was a lot of money for a nova but on the same hand i had it priced at a little less than half the cost to build it .
and that wasn't counting the 8000.00 dollar paint job.
But i know what you are saying i drove all over looking at cars and most are way over priced for what they are .