Part of the reason the Apple I is so rare, is that Apple offered an Apple I trade in program. Apple would destroy the boards of Apple Is that were traded in for Apple IIs.
* Not that there was really many to begin with.
* Not that there was really many to begin with.
I recall my junior high school had only Apple IIs in 1995.
Meanwhile, the Apple II just let you put in a disk and boot a program. Huge difference in usability.