I picked one up in excellent condition for $10 at a Goodwill store a little over a month ago. It's a SC 686, made around 1980 in the USA by Eureka Williams. The thing needed a belt and a lower cord hook. I'm not fond of the dump bag setup but other than that, it's a well built, albeit very simple machine. It took me a little while to get the hang of the level adjustment but now that I understand it, it's a beast. The real beauty of a Sanitaire is it's designed to be rebuilt quickly and easily and replacement parts are dirt cheap, especially when bought in bulk.