There is a reason why they are the only publisher that discount their books in such a dramatic ways: - 80% off a topic everyday - $5 selected ebooks every oth

There is a reason why they are the only publisher that discount their books in such a dramatic ways: - 80% off a topic everyday - $5 selected ebooks every other week or so - $5 all ebooks few times a year Why would they offer such steep discounts if the books are of high quality? For me, I never even bother to waste time looking even at $5 (or even if free) since 99.9% of them are really just crap.