Well, I got the 100-400 "L" at 15% off at the Canon refurb store, so I'm not complaining.
Black Friday is all about the average consumer getting good bargains on clothes, appliances, toys, etc., from retailers. Most of the people on this forum aren't the target audience. I'm actually quite pleased that camera dealers and manufacturers offer any deals at all. (BTW, Creative Live has a 25% off sale on their courses and Peachpit is offering up to 55% off their videos and books, so there are some decent deals out there for photographers)
And...if you wanted an entry level DSLR, there are some pretty good bargains available.