This is the cheapest I have seen these and they come with a Case. Seems like a good deal to me.
Ritek DVD-R 4.7GB with DVD Case - Only $4.75!
http://www.cdrsolutions.com/dvdr4-7gennp.html
Ritek DVD-R 4.7GB with DVD Case - Only $4.75!
http://www.cdrsolutions.com/dvdr4-7gennp.html