Today I got a comic book in the mail with postage due and a note saying that it doesn't qualify as media mail.  The only advertising in it is a "Coming Soon" type thing for the next Tank Girl book after this one in the back of the book, and in the beginning pages, "Other Tank Girl titles available from Titan Books: . . ." and it lists the first two.  In the note they stuck in my package, listing what's eligible and what's not, it says only incidental advertising is allowed, which I would imagine that is.  I mean, Stephen King has more mention of his books available and what's "coming soon" than this book did.  So I don't understand how this ISN'T eligible for media mail.  I only have to pay 1.15, but it just bothers me because, going by the print off they left in my package, it qualifies just fine. She had the book in a ziplock bag and that little "Information for the Receiver" bit taped to it. . . but that wouldn't effect it, right?

Anyone know? Anyone have this happen?

Was the comic book eligible to be mailed as a periodical?  It has to say so either within the first five pages or the last five pages of the magazine.

IIRC comic books do not qualify as Media Mail (one reason they are not PBS postable).

Its not the PBS invoice that disqualified it, single issue comics are not postable here because they don't qualify for media mail. (from USPS.com: Advertising includes paid advertising and the publishers' own advertising in display, classified, or editorial style)