I am also in the process of reorganizing my stamps - I have outgrown my current system (more on that at a later date). I was using the Cropper Hopper Large Zip N Flip organizer sheets (around $14 for a pack of 2) for the unmounted portion of my stamps (the rest are cling mounted), so I re-purposed them. I went to http://www.orientaltrader.com/ and bought several packs (12 sheets/pack) of adhesive backed magnetic 8 1/2 x 11sheets ($9 - $10/pack, depending on quantity ordered). I was able to get 3 cuts (6 3/8" x 4 1/4") per sheet, for a total of 36 and I have a large enough piece left over for some other project.
Hope this tip helps. I know what works for some doesn't always work for others. As I said before, the QuicKut binders are great, but not very price effective considering my ever expanding inventory of Spellbinders. I now need to think of a way to re-purpose my QuicKut magnetic folders. Any suggestions?