oh my goodness unique items like that to me are so hard to price - I didn't even know they made such an item. Yeah the only thing a google search pulled up is a 2014 etsy sale... Dunno I would think at least in the 50ish range? Ebay has a disney wolverine board on sale for $30 but not sure how comparable vintage disney is but it's the same wolverine maker. You can always put it up for sale taking the best offer
all the best!