I have two, one is a single unit, but I don't know how old it is. We used it until about a month ago, it has been cleaned and is being stored. The other is a double unit and was in a bodega when I purchased the restaurant, so honestly, I know little about it. If you wanted the double, you could take it and if it doesn't work, you don't have to pay for it. Price? Make an offer, I don't know what they are worth, but I am not looking to really make money on it, I just hate to see it sit there unused.