@echolane -- I can understand where you are coming from, and if it is an Accuphase Amp, I find it freaking ridiculous that a person can buy a brand new, in the box, unopened Accuphase E4000 Integrated Amp in Japan for $6,190...but buy it here in the U.S. and it’s $14,000! F**k that. I don’t begrudge a U.S. business owner making a living, but if you are going to deal in a product that has that big of an upcharge, good luck.

I hope everything goes smoothly in your transaction. Please keep us updated. Best wishes.

You can expect to get an amp and preamp from a Japan seller via US eBay

Well expect it won’t sound right with our power! Transformers also won’t work with it well since it is designed to work with a hair dryer or coffee machine not an audio grade part! 
You will never have a warranty or support if something breaks.

You can’t send it in for a repair they will not send it back!
 

I hope the Audiogon Cheap community realizes grey market products have no protection or warranty and you risk your product being seized if you send it in for factory repair with no recourse of getting it back from the distributor or factory.

Also no parts will be given to 3rd party repair shops. Especially with the proprietary parts and tweaks these japanese brands make in house.

@OP. Most people are extremely reluctant to buy gear that is requires add on transformers to correct for international mains voltage differences. It's important to bear that in mind if you ever have to sell the equipment subsequently.

Regarding servicing, also bear in mind that communicating with Japan is not easy unless you speak/read Japanese.