Does someone sit around at Kindle and decide where exactly to end a sample so that it hooks you in and hides how hideous the writing is beyond this point?
Do they contact the authors and say, "Yeah, hey, so you know that book you just wrote? Do you think you could rewrite the first five pages, maybe take out the comma faults, and try to make the heroine not seem so much like a wishy-washy, simpering idiot? Just for the sample section though. That'll make it good enough that people who want to be interested and insist on good writing before actually purchasing the book will do so.
"No worries about the stupid, simpering-idiot heroine who spends the next fifteen chapters going back and forth about the hero and about how much she hates and loves him at the same time (run, daisies, run!)--sure, she needs therapy (if you're doing a sequel, get her some fricking therapy), but so long as you make her seem like a strong, I'll-avoid-abusive/toxic-relationships kind of girl in the sample section, people will still buy your book."
Argh. Sometimes it's really easy to spot the crap, but lately I've ended up with some really stinky stuff. At least it's been cheap!