That is a nice CUD error. Although it is not the largest, it can still fetch a nice premium on ebay. I would say $7-15. Keep up the hunt!
Just the shipping one way costs more than it is worth. So no. Some errors are more marketable when authenticated, but cuds are common and easily recognized/attributed. Put it in a nice cardboard 2x2, label, display and enjoy! Nice find, congrats! :thumb: