Here’s a really fast way you can make some extra cash. Please note that you’ll need a bit of cash upfront, and a bit of time for research purposes.
Go to www.slickdeals.net and click on “Forums”. Now visit the “Hot Deals” section.  You will see a bunch of deals that may (or may not) be good.  Choose one that interests you (and one you feel is a great deal), then go to Ebay.com and research it. (My method of researching on Ebay consists of searching the ‘Completed Items’ and seeing if it’s worth your time to purchase and resell.)