bit of an old skool Game & Watch question...

[Lord Valumart]

so, i have a few of the old game and watch handhelds...just wondering how rare some of these things are...

i did think "ebay!!" to start with, but then i thought "hype has a bigger knowlage of everything", so...i ask you good peoples of the Ninty forum...

how rare are these:

mario bros. in box with instructions and everything, 1983
crab grab, in box with instructions only, 1984
zelda, loose, 1989

i have others but these are the main ones i'm interested in.

any help is appriciated.