I ordered mine from a German web site. They have them cheaper at $425, The prop drill jig is only $26 and they don't charge any shipping right now.
Click the small icon in the lower left corner to choose English and US currency. Shipping time is approx. 3 weeks, but they have them IN STOCK and ready to ship. Mine shipped a few days ago.
Bisson has mufflers now at $98.
I hope this helps. Good luck. :thumbup

Amelung Modellbau ZDZ,Moki
www.zdz-motor.de/index.html?lang=en-us