I think it is possible to buy mostly good books with a bit of discretion.
Of the 130 books reviewed on CW I have only 52. BUT - I have all five of the five-stars, all but 4 of the 21 four-and-a-half stars, and half of the 38 four stars.
More importantly, I have just one of those rated less than 3 stars. That too is a gift from a dear Australian friend who keeps on sending me books on Bradman
Cricket books are expensive, particularly when new, and there is a lot of very bad work along with some great stuff. If one is not taken in by the celebrity-value of the author or the attraction of the book title, one can make very good choices and spend money very wisely.