Any company using the word MINT, not associated with the Government or The Girl Scouts, is up to the snake oil sales.
The comic book (as we know it) has been around since what....the 1920's, Printed as a form of entertainment to be read and usually thrown away, the medium is still going strong today. This item, from what I understand, is not even a full reprint. Rather a reprint of a cover, of one of the most desirable comics made. What you are buying is laced in silver, given a meaningless GEM MINT 10 Grade, and marketed in a way, that makes the buyer think they are getting something rare/special. This reeks of the nonsense they did in the 1990's with collectibles.
If you enjoy it, that's cool. Nothing wrong with buying something you enjoy. I wouldn't give you the price of the silver for it.