I'm pretty sure the wallscroll is folded into the box as well (check the pics), and it isn't larger than your usual Dengekis - probably just a bit heavier. If it contains two poles for the wallscroll, those must have been taken apart.
HLJ "only" put 1380yen (SAL) on it...
Photos of Dengeki Vol.17 in the store (from AkibaOS.com)
I pin my pillows up on the wall. If it's double-sided, then I occasionaly turn it around to display the other side for a while.