TDK 4.7GB 16X DVD-R Spindle (100-Pack) or 16X DVD+R Spindle (100-Pack) for $11.00 after applying coupon code 89233386.  Note that this appears to be a coupon mistake as the code is meant for use in Canada.  Order online and select in-store pickup at Office Depot to save on shipping and lock in on this price.  Otherwise, shipping is free on orders over $50.  Here is a screenshot for your reference.  Note that in most cases, the differences between DVD+R and DVD-R are not that relevant to most people.