Buy.com: http://www.buy.com/pr/product.aspx?sku=205147220
has 50 Pack Memorex DVD+DL for $25.89 shipped.
Features
Video Features Great for backing up feature-length videos with its
double video capacity and 80% more data storage
Video Features High playback compatibility with home DVD
Video Features players and DVD-ROM drives
Video Features Wide selection of pack sizes to meet your needs
Tech Specs
Tech Specs Capacity: 8.5 GB
Tech Specs Video Storage: 240 Minutes
Tech Specs Compatible Speed: 2.4x to 8x Write Speed