I tried the demo, it worked of course. Then I trashed something I really need so, $49 later, I have a license and yes, it works as advertised. I also have Data Rescue II which works but is really, really slow. If time is money and you need to undelete some trash quickly, then this is maybe worth the money (I took off a star because its kind of over priced). And yet, if the poop hits the fan, you're in a hurry to get back something you deleted, well it is useful. I think for the money, they should allow you to install on at least two machines per license. Its network savvy, not that its difficult to over-ride this. Still, at this price, a two machine license (desktop and laptop) would gain it another star.