Hopefully you get something from him that is worth 1700 bucks. Check over your purchase with a magnifier to ensure you are getting exactly what you paid for. Better to lose a few bucks on shipping it back to him, rather than to accept a faulty product for that much money. In addition, don't let him drag out getting your IG11. Scammers say that it's coming along, or it's almost finished for months, until PayPal won't recognize your dispute because too much time has passed.
TazMan2000