Doing some basic googling, I would be skeptical of them. On their site, it says they are in their final retirement sales. Yet, there is a picture showing a relatively young staff, why didn't they take it over. If you google the address, it doesn't show the business front the website photo shows. It looks like just a farm. Not saying they aren't legitimate, but I would be making some calls before I would commit, and I think I would want to meet face to face.
I think they may be a broker and never physically deal with the equipment they are selling. Do you really want to deal with a company that is going out of business? The only way I would deal with them, would be if I could show up with cash and load the item on my trailer.
Too many red flags for me.
Doug in SW IA