You can get Imation, Sony, or Fuji CD-R's for $30 for a 50 pack spinde, usually you can find them for less. I've seen Sony's as low as $7 per 50 pack with rebates. I have had very good experiences with Imation, and I hear that Sony and Fuji are among the best as well. I've also had good luck with Prime Peripherals CD-R's, which are very cheap, but of pretty good quality. I hear that TDK and Samsung are the best, but I haven't checked the prices on either of those brands, though I highly doubt that they would be more than $30 per 50 pack spindle.
Zenmervolt