Right now on Amazon you can get the The Boxcar Children Bookshelf (The Boxcar Children Mysteries, Books 1-12)  for $27.52.
A deluxe Boxcar bookcase that contains 12 titles – The Boxcar Children® Mysteries #1 through #12. Also included are Boxcar activities, poster, and accordion bookmark with title checklist. The bookcase can expand to hold up to 32 books. Please note that the covers of books #1 through #6 have been redesigned with a fresh, new look for the 70th Anniversary of The Boxcar Children.
Be sure to double check the price before you buy- Amazon prices can change quickly.