Have you gotten set up with iFixit as a reseller? Their prices have become more competitive since they instituted it. Here's the link to get set up: [[Info:reseller]]
Here's a link to one of the discussions on the problem: https://meta.ifixit.com/Answers/View/1633/How+does+one+find+decent+replacement+iPod+parts
And a link to my original question on this in 2010: https://meta.ifixit.com/Answers/View/717/Why+don%27t+I+get+Reseller+pricing