I'm usually a complete and utter cheap skate, but even I can confidently say that this item is more than worth the money. I have an extensive collection of books, but bought 2 of the small sized shelves to act as decorative times for my living room. They were delivered quickly, and putting them up was simple. I currently have one medium sized hardback book resting on each of the bottom shelves as directed, and then another 10 medium paperback books stacked on top of those. I would say that each shelf could comortably take half that weight again. I frequently have visitors scratching their heads over how they work, and everyone always comments on what a unique focal point they make. I am currently in the process of redecorating my dining room, and plan on purchasing a stack more of these diamonds to add the finishing touches to the room. My eventual aim is to ditch the conventional book cases altogether. Absolutely no complaints whatsoever.