Well you never know someome may have one that they dont need... But I think I may have to lower my standards and get something cheaper!!
I'm not too sure you're going to find anyone who doesn't need the 580 that they have...most people who have one use it all the time...that's why they paid the money for it. If you don't need the little extra power, I'd just get a 430ex. Just know that there is no decent battery pack option for the 430ex without moding the thing.
