Yeah it's less of a thing now because companies all give "early access" 3 weeks ahead
I took a chance on a tv 6 months ago as was a big discount code for the 77 inch Oled model I wanted, I've checked the Black Friday prices and it's over £300 more so was a good gamble plus I've had use of it for 6 months.
There are some good deals about on all sorts of things but nothing that would get me to go crazy
Prices tend to go lower in Jan, but then you've had 1-2 months less use and no guarantees. Defo prefer online shopping for this sort of thing - stack discount codes, TopCashback and usually next day delivery.