I "think" I just scored a Powermax 4400w 6.5 HP OHV Gas Powered Generator With Wheel Kit (CARB Compliant) #XP4400 from eBay for $276 shipped using the Microsoft LiveSearch Discount I posted about a days ago (HERE). If you search on eBay, you should be able to find the same generator for $368 shipped minus the LiveSearch discount of 25% off using the "Buy it now" option and Paypal to checkout. The catch is that you have to act quickly once you get the desired discount because the rate doesn't last long and appears to change hourly.
The cashback has not officially been posted to my account yet (could take up to 60 days according the T&C's), but I made sure to take screen shots of every page while checking out.
I searched around and the reviews for this generator seem to be decent, especially for the price. Amazon is selling this generator for $399 plus $100 shipping. (HERE)