Verbatim 4x DVD+R 5pks for $0.99, includes 5 regular jewel cases. There is also a deal for 100 Verbatim 8x DVD-Rs for $29.99, but that's less of an incredible deal.
All pricing is in Canadian, and the deal lasts until the end of April.
They have locations in Surrey, Burnaby, Calgary, Edmonton, and Toronto:
Unfortunately, you can't order online, you need to call in or e-mail (or walk in).
So far the 4x DVD+Rs seem to be made by CMC mostly, but some people have gotten Singapore stock. All of it is DatalifePlus though, so it's always MCC002.