Brandon -
The problem is that all international shipping from UPS, FedEx, etc. is air freight and is expensive. When we ship speakers, we use sea freight which is very cost effective but takes a while to get there. It wouldn't work in this case because they also have minimums which would be more anyway.
As for declaring the value, since it is used, you can declare any value you want. But you can't insure it for more than the declared value. So there is some risk involved. If it is damaged in shipping, you could only collect the value you place on it (provided you purchased insurance up to that amount).
You may also want to check with USPS. There is a 70 pound weight limit, so it may not work out for you. But they may charge less. I have shipped speakers to a military address in Japan using USPS. It was more complicated, but it worked.
- Jim