I always look to see what isn't there. Because to make it up to current specs, it costs a lot of money. But with that said, for $100 you could take a chance on it. You'll get a lot of scrolling out of it if the motor is still good. I did a lot of studying and questions before I bought the one I did. The lever near you for tensioning is the big thing. Otherwise, all the tensioning is done at the rear of the saw away from you. But, a little 14 inch saw isn't that bad. I've been watching one near me that has come down to$280 and I thought about offering him a $100 but then, I thought, why do I need another saw. Especially one that I would have to spend at least $300 to get it to where it should be. I paid $300 for the one I had and it had all the updates and the factory stand. I turned it for $700 after playing with it for a while. Charley L is the person to ask. He gave me a lot of info on the Hegs.
This is the one I've been watching. https://orangecounty.craigslist.org/tls/d/huntington-beach-multimax-scroll-saw/6900292324.html
Here is one that has all the updated stuff. You can compare the pictures. The lever that you see here is the tension lever. Makes life easier. https://inlandempire.craigslist.org/tls/d/palmdale-hegner-scroll-saw/6934118728.html