O wow, thank you. I have been laughing for the past 5 minutes after looking at the first set of pics



The only anvil (s) I see are in the last pic which you well us to ignore.
I think (if I am putting it together properly in my head) the shaped metal plate (~2" thick) mounts in the stand shown in the first set of pics, vertically.
Honestly that looks like a horrible setup for use as an anvil. If I had to guess, the PO or maker probably designed it for very light forming use. With the stand being steel and those legs at their extreme angle that is going to be hell to work on from ringing and vibrations. A few of your other pics have a nice anvil setup with wood base?
Depends on what you want to use the anvil for. What is your intended use? Different types of work have better suited anvil shapes.
As for what is it worth... Honestly I would have a hard time stopping to pick it up, if I saw it on the side of the road. And I am extremely cheap as is it. So for me not over scrap value.