The phrase "crap books" refers to books that are considered to be of low quality or not very good.
Sentences with «crap books»
And they wonder why the publishing industry is in trouble... between crap books and publishers who just don't give a crap, it's a wonder they've survived this long. (redeeminggod.com)
If I find crap books, that's hardly my fault, is it? (angiesdiary.com)
Besides the obvious goal of making a profit, I think traditional publishers want to separate their books from the perceived self - pub crap book pack and are doing that with higher prices. (jamigold.com)