Amazon has the Ridata/Ritek 4.7GB 16x DVD-R (100-Pack Spindle) for a super low $17.99. Free shipping with $25 order so buy two!

http://www.amazon.com/exec/obidos/ASIN/B000FJP0QU?tag2=antirebate-20

I don't know how long this will last, so ACT FAST!!!