Black Friday works because it creates urgency, not because it guarantees the lowest price of the year. Many retailers nudge prices up in the weeks beforehand, then "discount" them back down to a level that's close to where they started.
That doesn't mean there are no genuine deals: some categories (large appliances, big-box electronics) do see real, meaningful drops. Others, like phones fresh off a launch, almost never do.
Checking a specific product's price history, rather than trusting the "sale" label, is the only reliable way to tell whether a November offer is a genuine all-time low or just good marketing copy.
If your goal is the absolute lowest price rather than the "right" date, the best moment varies by category — which is exactly why we compare prices across stores continuously, all year round, not just in November.