Apple and the Microsoft Macintosh Business Unit have teamed-up to offer a rebate on Office 2004 for Mac. Between November 19, 2005 and January 31, 2006, the companies are collaborating on a seasonal promotion that offers “up to half-off” all Office 2004 for Mac product editions with the purchase of a new Apple desktop or laptop computer. Pricing is as follows: Office 2004 Student and Teacher Edition (US$149 Estimated Retail Price — $50 rebate), Office 2004 Standard Edition ($399 Estimated Retail Price — $200 rebate), and Office 2004 Professional Edition ($499 Estimated Retail Price ($250 rebate).