In Korea, mangas cost 2-4 bucks per volume.
Fuck, I got my last 3 death notes for 12 bucks.
I don't have a collection, seeing how all the stores in Canada sell useless shit (Old volumes of Naruto, bleach, first volume of Shana, old Negima ones, and a few others. ), or mangas I've already read quite a while ago.
I'm more into light novels. I have the first 10 volumes of Kino no tabi, and the first 4 volumes of Gosick (regrets buying Gosick), while my brother has the whole bugipop phantom collection, which consists of more than 10 novels in the series.