Interesting. I don't really know how to judge the "condition" of the cart. If you look at the cartscan here at AtariAge there are markings and blotches all over the cart. My cart has no marks at all on it. It practically looks like new. I don't have the box, unfortunately.
I recently began looking at my Atari carts which i had stored in my attic. I have about 50 or so. I actually owned all these carts, none have been purchased by me to add to my "collection". Unfortunately, my Atari console is broken so i can't actually play the games anymore, except with an emulator of course.
As a completely unrelated question, do people collect the manuals too, or are people mostly interested in the cartridges themselves? I have all the manuals stored away somewhere...
Is the rarity guide here at AtariAge for the carts, or the complete cart/manual/unopened box?