BH Photo Video has pre-Black Friday deals. Canon has rebates up to $550 on their DSLRs (including $400 off Canon 80D and $350 off 70D), lenses and speedlights. For all the Canon deals, see here.
Sigma offers savings up to $300 and Sony up to $350.
There are plenty of other deals, including on Mac computers.
For all the deals, visit the BH Photo Video website.
Sweet deals! You should have a black friday sale on your store as well.