A number of people have reported good success at buying from Canada. One of the dealers most frequently mentioned as being good to do business with is Keyboard Centre in Toronto, http://www.keyboard.on.ca/,
905-639-4465. They'll give you a price over the phone, delivered to your home including all customs duty and shipping. The warranty is good in the US.
There's also a European dealer called PianoDepot, www.pianodepot.com.
They're quoting $2650.56 plus shipping and duty. You can at least use this as a starting point with your local dealer. Buying from Europe means the warranty isn't honored in the U.S. and you need a power converter (inexpensive) but again, a number of people have gone this way and been satisfied. You can ask about this at the Clavinova user group, www. cvpug.com
I wound up buying my Clavinova locally even though I paid a little more because I wanted to support the dealer who took time with me. However, having other price points was very useful in negotiating with him.