Memorex 4.7GB 16X DVD+/-R 100 Pack Cake Box Disc for a good deal.
Office Max Circular - page 2 (top right)-100 pk $9.99 (save $45). most stores will match circular if you bring it in, staples limited me to 1 pk, but best buy let me buy 3.
Again YMMV.... ny long island circular.
Its kinda funny on the cover pg they advertise a 50 pk of same for $12.99;)