Spiderman was first featured in Amazing Fantasy #15.
August 1962. 12 cents.
Today Amazing Fantasy #15 sells for over $50,000. Spiderman #1 costs $40,000 in mint condition. My father ripped up that too. Needless to say I rejected his values as a hippie. This conflict of philosophy made us even years later. My father had been more right than I had wanted to admit as a young young and I was less wrong as an adult as a child.
But never right.