I created something to help you determine the best way to spend your resources, namely those that are soulbound. The attached spreadsheet enables you to find the best use of your spirits of harmony, imperial silk, scrolls of wisdom, ironpaw tokens, and more, just by copying the data from a WoWuction .csv pull into the "Data" tab and sorting the various tabs by the value of the relevant resource. The tabs include calculations for market demand and also show the % difference of the current price from the 14-day median so you can anticipate price fluctuations.
FILE>DOWNLOAD>SAVE AS: https://docs.google.com/open?id=0Bwj...0tlZHZOVjZUdVk
Handy data link: http://www.wowuction.com/Tools/RealmDataExport
EDIT: Fixed the data link, thanks Sinshroud.