I see some communication about pricing and this is based on wrong info and it is a comparison between apples and pears.
The Nacra 17 price in aluminum mast is in MSRP 16350,00 this is normally a price where you can buy this boat worldwide except countrys where you have big import duties! MSRP means manufacturer suggested retail price!
The Viper Price with aluminum mast is showing in the report for 13500,00 you still have to ship and import this boat out of AUS! I did some research about pricing of the Viper and found that you can buy this boat in Germany by an AHPC Dealer for 16521,00! What is 3000 more than ISAF report and AHPC dealer pricing what is a big difference! This dealer price makes sense because an Nacra F16 is about the same price 16176!
If you want to compare both boats you have to put the same mast on each boat. ( Nacra 17 14500 ex works NED and Viper 13400 ex works AUS !) If you look to dealer pricing you get Viper 16521 and Nacra 17 16350. All prices are with an aluminum mast and EX VAT!
Both boats where presented with a carbon mast so if ISAF wants carbon masts the price from the viper will go up 2000 euro ex works AUS!http://www.lindstaedt.com/viper-f16.htmlhttp://www.sailing.org/38217.php
Hope this helps to get a more fare communication!