I deal with people like that all the time and its insulting at best. They are pulling dick moves like that hoping someone will fall prey to there tactics just so they can score a deal. What they dont realize is that they are screwing up this industry by driving prices down while costs go up. Its reasonable to negociate with someone but dont have to be an a.. Hole about it, im sure shockwave will be happy to build him an openbow but they dont want to pay for it.......
Good luck with the sale.....and your right people do want closed bows i get inquiries all the time.