Disklavier

I'm interested in getting DU1A upright disklavier mark III from local 
dealer, Pennsylvania. Sticker price is $13,000. Two years ago I 
traveled to Japan and took some yamaha piano brochures in Tokyo. This 
model is sold for $9,300 in Japan, sticker price, (after conversion 
from Yen to USD). Let's assume the piano is supposed to be more 
expensive in the US because the wood has special treatment for US 
climate. How much is the reasonable price of DU1A? THanks.

LL