.. high-end Nikon camera ..
Since you haven't defined "high end", nor indicated which model, exactly, I will simply guess, based on what I think "high end" means. To me, it is an "enthusiast-level" camera, and not one of the "entry-level" cameras. This brings me to my point:
In my recollection, the black Friday deals are almost always the entry-level kits, often with peripheral accessories, and bundled all together in order to confuse the shopper. I have never seen much in the way of actual enthusiast-level cameras being substantially reduced just for one day. It could happen, but I think we can presume a rather limited supply of them, and the retailer may be counting on making up the profit margin by selling you some additional accessories.
My recommendation is to start your shopping now in order to get enough information that you can recognize a good deal when one comes up. Start making notes or clipping ads, and pay close attention to what else is being bundled with the camera. Most deals include a camera that isn't selling quite as well as hoped, bundled with a mediocre lens or two, a really cheap tripod, a tiny gear bag, some useless filters, an off-brand speedlight, and a lens cleaning kit. Big whoop!
I usually recommend that beginners take a deep breath, take some time to learn what's what, and carefully compare like equipment with like equipment so you know which deal is the best. Oh, and watch out for gray market stuff. There's nothing wrong with it except for the fact that gray market gear is not covered under factory warranty. You will see such gear selling for about $100 to $150 less than the same thing with a U.S. warranty, and that is what you're paying for when you pay the higher price from a reputable dealer.
If you have questions about certain deals, post a link to the advertised items here and ask again. Good luck!