Corel are discounting all their WinDVD products. All 3 versions (standard, Plus and Plus Blu-ray) are being discounted, from $10 to $20 Off the normal price. Here are the links:
Please note that the next major revision of WinDVD, WinDVD 2010, is already available (the Pro version will be available next week). Sale of WinDVD 9 will be discontinued then (7th September).