I passed up one of those at Goodwill a year or so ago. It looked like it had seen gentle use, and they only wanted $10 for it, but I decided it was too far out of my traditional Electrolux ecosystem, too much plastic, and too many circuit boards. Somebody else immediately snatched it up, so I don't feel too bad about it. I sometimes think maybe I should have bought it, especially for that price, but then again, it's just not my type of machine.
People who know about my vacuum obsession sometimes ask me why I don't sell some of them off, and the simple truth is that by the time I've got one put to rights, I've put so much of myself into it, I can't bear to part with it. Ridiculous, I know, but there you have it. Also, I tend to sink too much money into the machines, which I would never be able to get back out of them.