The only thing that sucks about it is that Amazon seems to mix around reviews of "the same" book (different printings, possibly even slightly different content since some may be expanded, have different forwards, et c.), plus sometimes ship different products with the same product page, so you can't be sure whether the review that says the binding fell apart or the paper felt crappy was for the same product you'll receive if you press "buy now".
Which would be why I basically only buy books on Amazon if someone gives me a gift card (still safer than buying electronics there). Their product pages at best suggest what you might receive. I continue to be confused at how the shit they pull doesn't put them on the wrong side of several laws.
Amazon's packaging and the delivery boy is pretty funny though.
Googling 'site:amazon.in "delivery boy"':
- There is no problem with the product,but the delivery boy charged extra 12 Rs,and said it will be adjusted in the next order.
- But delivery boy is very bad. Delivery boy has no manner how to talk with costumers.
- Ur delivery boy was not ready to do door delivery. He called u from the main road asked me to pick. I went to the main road and asked him, y u rnot doing
Now, the worst I've ever encountered are books with pages out of order.
Maybe you think that is too niche; but Amazon has Amazon-specific versions of some books and also does print-on-demand. Without people reviewing the quality of these things, how am I to know the quality? This also extends to Blu-Ray collections and other things which contain content. Even a Kindle book isn't just the content; how well the book has been formatted matters.
To the extent there is a norm, the norm is that anything related to the thing you are purchasing is fair game; things related to the seller or shipper are not. (Understanding that sometimes Amazon is more than a seller.) If you want reviews specifically of the content, you should go to sites that are specifically for reviewing content.
To the extent there is a problem, the problem is that the star-rating is global for the entire review. I can't give a book 5 stars for content and 2 for book quality. And no matter how good the content, if you're charging me $20+ for a book with pages falling out, you're not getting five stars from me.
If you're just doing reviews independent of medium, review just the content. The fact that you were reading a poorly stapled together print out from Jimmy down the hall is immaterial.
If it's more like Amazon, where I'm reviewing this particular item I bought, people should know that the item being sold is of substandard quality and they should get the item elsewhere.