Congrats on your score. My sense is there 10 made for that one. If you put it on Ebay today for $500 Buy It now it will probably sell today. If you put it up for bid it may go as high as $700 or more is my sense. There will not be many opportunities for people to acquire that one. You know we have some completists out there that will drop mucho dinero on that special piece. I just saw an employee hot wheel with 200 made produced in 2018 sell for $5100 on ebay. Only one ever sold.
If you need a windfall, Gold WIndhex is your ticket.
Andrew