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.

The annual Black Friday shopping day has always been about finding the best deals, but this year retailers are preparing for a US consumer more zealously fixated than ever on getting value for their money.

Businesses are trying to make the most of a short holiday shopping season brought by this year's late Thankgiving.