Bought a number of instruments from Japan. If it's shipped through a courier like FedEx, etc, they will charge you VAT and Import Duty and a surcharge for processing this on your behalf. You will not receive the instrument unless you pay the money. I've never had somethign come in through a courier like that which didn't get taxed.
If it goes through EMS, the Japanese state mail company, it will end up with Royal Mail on your end and, sometimes, they don't apply the customs charges (mistakenly, it must be said) they should. Everything coming in from outside the EU should have VAT and Import Duty (over here it's 4.3%) applied to it, some do slip though the net though. Do the maths before you commit to buying and be prepared to pay. You might get lucky, you might not.