I have one and I LOOOOOVE it. I just posted pictures in my gallery the a few days ago. I am so much more productive because everything is right at my fingertips. It is pricey but I have to say it was some of the best money I've spent on my scrapping. I still have some things to put in there but if you have the money to invest in it I say go for it.
Copied from my 8/13/2012 post on this subject:
I bought one a few years back and really like it. At first I had no place to set the rack up so I laid it flat in an under-bed storage box and pulled out the box and removed the lid when I needed it. Later I gained some counter space in the laundry room and set it up in there and I love having everything available at fingertips when needed. The organization system that they taught was also extremely helpful. However, I decided I did not like storing my papers and card stock in it. I would advise that if you get the rack, only get the variety packet of storage "pages" before buying any extras. I was advised to get a bunch of stuff when I ordered the rack but I ran out of some types that I ended up using a lot and had way too many of others. I thought that it was very expensive but on the other hand it has really helped me a lot. I love browsing through it when trying to decide what to use for a particular layout. It's kind of like having my own private little scrap shop!
If you check out the earlier thread, you might find even more info to help you decide whether you want to invest in one.