I've only ever flicked through some while stuck at an airport or train station.
None have been any good, but only have looked through the gleamers.
Lilly pebbles was ridiculous, she marketed it as a life changing book for all women. It was very basic well known stuff in a huge font. Terrible reviews on Amazon and she gave up promoting it shortly after releasing.
Jim chapmans book was equally basic and uninspiring. Seemed like a poor watered down copy of so many other fact books. Sold terribly compared to the publishers expectations and they've been burnt by it. Has been discounted 80-90% to try to get rid of it.