These shelves are cute but flawed. Here's a few flaws I found. 
1) the letters have dowels on the bottoms which fit into the shelf cut outs. Some of the letters fit very tight- actually hard to place and others so loose they spin around. 
2) the white on white isn't a great idea. I worried this might be the case but thought I would paint them... They are not paintable. Paint drys and peels right off.
3) the white is not actually paint - it's like a paper wrapped on a shelf - not sure how to explain it.
4) the hardware stinks - it has these horrible anchors that should hammer into the wall then screws get screwed down inside.. The anchors are cheap and break. 

Would I buy them again? No