Hi dummy. Media Mail is intended to ship "EDUCATIONAL MEDIA." That's why it's discounted. It's the government promoting learning and education.
"Qualified Items Only these items may be mailed at the Media Mail rates: a. Books, including books issued to supplement other books, of at least eight printed pages, ****consisting wholly of reading matter**** or scholarly bibliography, or reading matter with incidental blank spaces for notations and containing no advertising matter other than incidental announcements of books. Advertising includes paid advertising and the publishers’ own advertising in display, classified, or editorial style."
Now, as a big comic book enthusiast, you'll no doubt say to the mail clerk, "BUT COMICS ARE READING MATTER." And if the postal clerk wants, they'll begin to tell you about an arcane rule, that there must be 80% words to illustrations. That's how the postal clerks determine if they want to give you this discount or not, as they OPEN YOUR MAIL WITHOUT ASKING YOU, which is also their privilege when shipping Media Mail.
Here's another thing: Media Mail has no guaranteed arrival date, unlike First Class. Media Mail is sidelined for more important mail services.
So when it comes to shipping a $25 IndieGoGo perk to a waiting customer in which they probably paid you $10 for shipping, perhaps you should go First Class or Priority.
But maybe you INSIST on being a cheapskate. You can go the Jon Del Arroz route and berate the inspector, "But this is a graphic novel containing no advertising," but as this article tells you, and as I personally experienced:
"Comic Books and Media Mail Inspection
But will the USPS person actually check the comic book for the kind of ads it contains if the inspect the package? that is very unlikely. It is more likely that they will reject the package or charge the receiver the price difference between media mail and priority mail."
So you're basically running the risk of having your comic book turn up at the backers house POSTAGE DUE.
All because you wanted to save $3 and not use FIRST CLASS.
They don't care to make the distinction between comic with no advertising and regular comic.
This article recommends you swindle the post office by lying:
"
One tip to make the USPS employee less likely to inspect your media mail is to package your comic books in a box, stamp textbook on the outside, and use a name on the label that suggests it has something to do with education and not comic books."
...Which isn't something you'd have to do if you were entitled to ship your book Media Mail.