I just listed a new Luke Skywalker Force FX lightsaber auction. It is the brand new enhanced green blade version - in stock now. This one is a limited edition MR exclusive, sure to prove difficult to find in the future. ebay auction There's a link to the movie in my auction - the one that highlights the dramatically improved light effects. The sounds are the same as the newest Revenge of the Sith Anakin saber, but tweaked to a lower pitch. That means that there are multiple clash sound effects rather than a single one like the old version. My shipping and item price are flopped.
Inspected carefully - it is in perfect condition and has no defects of any sort - a perfectly crafted MR saber.