We were shopping for new organization ideas for the studio and have to admit.. kinda stunned that Restoration Hardware was NOT the most expensive option! lol .. the West Elm unit was smaller and more expensive (go figure! ) just goes to prove - ya gotta shop around. The price range for this "industrial" style rolling bakers rack/ bookshelf/ retail display really ran the gamut! 

for the money.. the world market option or (maybe 3 of them!) seem to do the trick! Also as a bonus the smaller rack is slightly more versatile. It works in other spaces too, and isnt limited by the length of its run to being stuck along one long wall.