There has been a new trend in retail sales this year, the "pre Black Friday" sales being promoted by Walmart, Sears, K-Mart and others. The sales being offered by these retails are very good, not just some silly teaser sale, but a price similar to what you would expect to see on Black Friday (November 27, 2009).
However, Amazon.com is throwing their hat into the "pre Black Friday" sale mix as well. For example, on their Gold Box Deal page Amazon is matching some of Walmarts sales today including those on the televisions, laptop and XBox Arcade system. Amazon is calling these sales Lightening Deals and they are starting at set times throughout the day.
You can sign up for email alerts for the Gold Box Deal page, which will I am sure also keep you up to speed on any and all "matching" sales from now until the holidays.
As an online seller, you may be able to purchase one of these items (such as the laptop or the XBox system) and resell it online for profit. This is a great way for a fast turnover without leaving the comfort of home to source inventory.