Not sure if you can find anyone (easily and legally) to pay extra for a man root or emperor root.
Think you would have to have it certified to offer it for sale on ebay.
In my case (TN) I would also have to buy a 250.00 dealers license before I could have it certified and offer for sale on ebay.
A few years ago Billy found a nice one and sold on ebay, but it did not fetch the price he was wanting and best I remember he bought it back.
You could always ask your local dealers if they ever pay extra for man shaped roots.
Below is one I found in 2012, and I shaped it by putting it on cardboard and placing straight pins along the arms, legs and body to shape it like I wanted until it dried.
I kept mine, did not try to sell it. It had a real good man shape, but the arms and legs were sort of skinny.
Good Luck !
TNhunter