We had two sets, side by side, along a large wall of our toy room. We used the shelves for bins and smaller toys to get them up off the ground. The higher shelves displayed some of Drew's lego creations and are great for board game storage.
Having vertical storage was a huge space/floor saver! The shelves are already white, and you can customize with different sizes to fit your needs. These are not hard to install, but you must make sure everything is level so you don't have leaning shelves!
We are currently trying to figure out where these shelves can best be utilized now that they are out of the toy room. Maybe in the new office space downstairs or extra closet storage? I will keep you posted!