Some of their books are 'reject stock'. I noticed many misprinted covers the last time I was there. The content should be fine though, can't sell books missing a chapter or two without a huge outcry from the reading public.

There's actually a 2nd hand bookstore on the top most floor of One Utama btw. Its quite near MPH, hidden in a less traveled lane between shops. Quite a selection there. 2nd hand mags as well IIRC. Lots of National Geographic magazines.