PM EST After weeks of waiting to make it official, Black Friday has finally arrived. We're tracking the best deals here, adding new ones when we find them, noting which products have dropped to record-low pricing and which have sold out.

REI doesn’t participate in Black Friday, but its Cyber Monday discounts just dropped and will last through December 2. I immediately scouted for Arc’teryx, and this was the best deal I found on the pricey (but worth it) outdoor brand. Men’s sizing gets the same 30 percent discount.

Best Buy's Black Friday deals take up to 40 percent off. Now is the best time to grab that iPad Mini or the best TV ever that you've been eyeing all year.