title: Add Final Price to admin product grid in Magento?
body: <p>How can I add the "final price" (with all the catalog rules and special prices taken into account) to the product grid in the Magento admin?</p>
  
  <p>UPDATE 10/12/2012
  I am using v1.1.8 with a large number of customizations so I just did a fresh install of v.1.1.8 and added addFinalPrice() to the _prepareCollection() in the product grid, but now all I get is a semi-blank screen in the Manage Products admin.  Any ideas?</p>