The best that I've been seeing is about $1 a disc (for name brands) . . . a month ago, Best Buy had a 50 pack for $50 after an "instant" rebate. I'm hoping to see them cheaper too.
If your machine does DVD-RAM, you should run to Best Buy (ending today) they have a 10 pack of nice Panasonics (single side non-cartridge) for $34 with a $29 mail-in rebate . . . total of $5 for 10!
The RAM ones are great because they are completely rewritable and I even edit right on them.