I have all 25 Volumes of "Growing up With Science: Inventions" in excellent condition.  Unfortunately, they all share an ISBN, so cannot be posted as 25 books, only as 1.  I can't see parting with 25 hardcover books, and paying $30+ in postage and getting one credit.  So, if you are interested, I posted the ISBN as ONE BOOK, and if you PM me, we can work out the transfer (25 volumes for 10 credits).  First come first served.  Thank you!