There's a guy near me who has one of those with 3 tools bolted to it. He's been trying to sell it for a couple of years at $500. No luck. If I had the space for it, I'd try to make him an offer. But, not gonna happen. Offer it up for free and save yourself a trip to the dump. Someone will always take something for free. Actually that reminds me of a joke.
There was a guy who had an appliance of some sort that he put out by the street and offered it up for free. But no takers. So, he put a "for sale" sign on it and asked $100. It disappeared that afternoon.