I have a Gammill, a Premier Plus, and I love it! (Even tho she's been VERY badly-behaved today.....). If you're really curious to see how much it's been used, ask the owner to hold the "M" button on the faceplate and then turn the machine on, and read you the number. It will tell you how many hours the machine has on it...if she doesn't want to do that for you, and she's close enough for you to visit, do it yourself. That will tell you more than just the age will. And by the way, at eight years of age, she's out of warranty....look on Gammill's websire or call a dealer in your neck of the woods. You'll be happier....