获得Visual Studio 2008 Standard Edition许可证的最便宜的方法是什么？

I know I can purchase it for 9.00, but my primary reason for upgrading from the Express version is I want to be able to use ReSharper, which is an additional expense. Are there any ways I can get a VS copy for less than off-the-shelf price? Any special programs I can join, or is there a special "developer" version :) (kind of redundant, I know) I know I can purchase it for 9.00, but my pr