How much does it cost to move to Japan from abroad?

It depends mainly on shipping method, volume, and the distance from your origin country. Sea freight is cheapest but takes weeks to months; air freight costs more but arrives within days to about a week. Used personal belongings are generally duty- and tax-exempt if you declare them as unaccompanied baggage on arrival. Once you're in Japan, compare local movers on IeGo for the final leg from the port or airport to your new home.