While a lot of companies are already running their Black Friday sales, some are waiting until actual Black Friday to get them going. One such place is The Army Painter. If you can hold out, you can get some great deals on their paint sets. Get the colored goop you need to main your minis and terrain look awesome for cheaper than you'd usually spend.
From the post:
Black Friday Deals are official - save 10-15% on our already high-value boxed sets! Black Friday Bundles go live Friday and run through Cyber Monday.