It has no inherent mod Wich would for me allrdy be a guess for merchant.
But u can also check Red Fireball thread with max stats for each weapon. ( I am on mobile I don't have the link here sorry)
Then u can see if it's Max for the req or maybe a new max that wasn't discovered before. In that 2 cases I wouldn't merch it and give it for auction and see where it goes. But even then it's basic smit staff and I won't expect much out of it