I bought 50 printable DVDs from Costco for 43 cents each. discmakers.com sells white printable cdrs for 44 cents for $100 plus $5 shipping. It goes down to 36 cents if you buy a LOT.
The quality is excellent. Almost like a photograph. I did a CD at a bar and sold it with a picture of the bar's sign on the CD and its looks fantastic, in full color.