Provided by the excellent source of everything Atari (vintage and homebrew), AtariAge, here is an excellent rarity guide for collectors. It’s a great source to roughly estimate how much you might have to pay to replace your childhood collection (HINT: usually not very much)

Or for someone such as myself to find that of my personal collection of about 140 games, only one rates even a 5 on a scale of 1 to 10 for rarity. Meh.