I would not disagree with you, however, your thinking and your purchase patterns change as you collect over time. Eventually, it’s quality over quantity.
Guineas rarely came in 3/4” size. Usually you see more stretching of the colors and no dark spots in the centers of the color specks in true Guineas. You need to look at a lot of true CAC marbles to appreciate the difference with the many copycats, as they are heavily copied.
We played “pots.” You dug three shallow holes side by side by side. The middle “pot” was “winner takes all.” The one on the right was take a marble and the pot on the left was loose a marble. You drew a line anywhere from 5-10 feet and tried to get your marble in the center pot to win all the marbles.