Parallels Desktop 4.0 for Mac for $23.99 Shipped

Parallels Desktop 4.0 for Mac for $23.99 shipped after this $20 rebate.  Here is a screenshot for your reference.  Note that the purchase has to be made by 8/31 for the rebate to be valid.  This program improves the operation of Windows applications on Mac systems and supports for OpenGL and DirectX 9.0 3D graphics software.  It usually sells for over $50.