I didnt know if this was postable or not www.scholastic.ca/kids/klutz/expressyourself/weirdfacts.htm

just curious :)

It has an ISBN, so as long as it is in good condition (all pages intact, etc) it should be postable.  I have posted the FanDex "books" which are similar.

No - Cards are not books - many things including DVD's have ISBN's and are not books.   From the help center:

Allowed:

Not only are they not postable, they are not mailable via Media Mail according to the PO website. Merely the existance of an ISBN does not make an item a book. The headers for displays on which an entire author's books can be placed, or a specific title even, have ISBNs. More details must be considered for both PBS and the PO, such as pages, some type of binding, words, etc. or a digital replication of a book (audio).

Decks of cards is a question that seems to come up regularly in the PO Questions forum, and the PO workers there are always quick to point to the USPS website that describes books as being what is allowable under media mail, and that decks of cards do not meet the criteria based primarily on their lack of a binding.

thank you for letting me know! *smiles* hehe.  I had gotten it at work and saw it had an ISBN number so was curious :p. 

Never hurts to ask, Jacqueline, at least you thought about it instead of just assuming because it has an ISBN that it's postable :)

ETA: I just re-read that and decided it might look like I was referring to Laura in my comment, but that was not my intention, Laura, believe me, I didn't mean it as a slam or anything at all!