As Blackbird has stated, nobody knows which components will be on sale, and for how much of a discount.
This is both the blessing and curse of sales.
My best advice would be this:
Ask yourself if you are willing to buy all your components at their current prices.
If you said "Yes", it wouldn't matter if you got some serious discounts or none at all during Black Friday.
Consider any discount as a bonus that you can use for additional parts or upgrades.
On the flip side, if you didn't get any discounts at all, you got what you wanted anyway.