I just guessed at a zip and weight for the package and used the postal calculator. It will take longer to arrive and the package needs to able to be able to be opened or examined by the post office as describe below but a 5 pound package from a random MI zip to me cost $4.80 to send. You would want to check if the post office allows you to wrap the box in plain paper but still use their flat rate box. It does need to be identified as Media Mail on the outside.
Hope this helps you out.
Laura
"Media Mail is not sealed against postal inspection. Regardless of physical closure, the mailing of articles at Media Mail prices constitutes consent by the mailer to postal inspection. Media mail is used for certain types of books, films, manuscripts, printed music, printed test materials, sound recordings, play scripts, printed educational charts, loose-leaf pages and their binders consisting of medical information, video recordings, educational reference charts, and computer-readable media. Video games, whether on CD-ROM, diskettes, or similar software, or playable systems including computers, do not meet the standards for Media Mail. Storage devices such as "portable hard drives", "thumb drives", "flash drives", "jump-drives", and "USB drives" for use with computers are not eligible for Media Mail prices. For specific eligibility please see DMM 173.3 The maximum size of an item in combined length plus girth (distance around the thickest part) is 108 inches. Mark each package "Media Mail" in the postage area".
So basically I have to go to the post office and see what they tell me about all of this then. I will go tomorrow and then I will let you know what they say when I get back home. I also have to go to the library and do some school work so I do not fall behind, because I am in college. When I get all of that dome I will let you know what they say. I will go to the post office tomorrow and then when I get to the library I will let you know what they say alright. I hope it goes the way that you think it will go, because I have tons and tons of quilting magazines to get rid of lol