DVD+R DL 50pk $30, CD-R 100pk $15, DVD-R 100pk $20, 100 DVD cases $19 @Meritline
 

Decent sale here on non-archival blank CD and DVD media (duplication and distribution uses only).
For archival grade media, refer to the Blank DVD Media Review Guide

50-Pack Memorex 32025732 8X DVD+R Dual Layer Silver Branded Blank Media Disc in 50 Pack Cake Box
$29.99 (Item#104-309-050)
$29.99 w/Code: MLC104309122912NL1 For First 100 Orders
BUY NOW from Meritline: http://www.shareasale.com/r.cfm?b=78...q_v=2a51331b56

100-Pack Titan Duplication Grade CD-R 52X White Inkjet Hub Printable CDR Blank Media Discs with Metalized Hub in 50 Shrink Wrap
$14.99 (Item#100-511-100)
$14.99 w/Code: MLC100511122935NL1 For First 100 Orders
BUY NOW from Meritline: http://www.shareasale.com/r.cfm?b=78...q_v=2a51331b56

100-Pack Philips (DM4I6B00M/17) DVD-R 16X White Inkjet Hub Printable Blank DVDR Media Disc 4.7GB in 100 Pack Cake Box. Duplication Grade
$19.99 (Item#102-679-100)
$19.99 w/Code: MLC102679122929NL1 For First 100 Orders
BUY NOW from Meritline: http://www.shareasale.com/r.cfm?b=78...q_v=2a51331b56

100-Pack Black Single DVD Cases, 14mm Standard Single Case, Made with Polypropylene (PP) Material
$18.99 (Item#153-019-100)
$18.99 w/Code: MLC153019122917NL1 For First 100 Orders
BUY NOW from Meritline: http://www.shareasale.com/r.cfm?b=78...q_v=2a51331b56