Without believing in any theory behind it; I evaluate the cost of models in one way as a cost per hour issue.
It is NOT my main way of evaluating whether or not to buy a model, but it does matter when I look at $ spent/ return on pleasure.
A ship model takes me a year or so to build. Call it two or three hundred hours. So at $ 200 for a resin battleship, maybe works out at $ 0.75 to $ 1.00 per hour.
That Mustang, which by the way is a truly magnificent kit; would take me one hundred hours or so. Sort of the same values, next level of cost above.
I guess the conclusion is to take up a lot of free time on a model.
If that sounds silly; I'll submit this.
I always notice that most modelers rush to finish.
Don't.
Bill