New Koetsu on Ebay from Japan???

i have had no trouble buying japanese cartridges from ebay sellers

as always check feedback... extensive good feedback cannot be faked... ask questions on warranty and how a defective item would be dealt with before buying

there was a time few years back when audiotechica art 9's were not widely available via usa retailers, i bought two through a japanese seller on ebay... it worked out perfectly 

Juki is well known on Ebay and has been around for a long time. Like others indicated, no warranty and maybe even gray market without serial number.  The risk is yours.  However, savings on a stone bodied Koetsu can be significant (greater than 50%).  Link below may not work due to Agon's goofy format - if not, search for 2juki-cartridge on Ebay.  Hope this helps.

As to the potential value of the factory warranty, in my case I found when I got back home in the US that my Koetsu Urushi  had a deviated cantilever. I sent it back to the dealer in Tokyo and got a new cartridge with absolutely no problem, because I had the warranty. Of course I needed the help of my son as translator, because no one at the dealership spoke any English. 12 years later, I recently had it retipped by Expert Stylus, and if anything it sounds better than ever.

It's simple risk vs. reward. What are your cost options for a non-warranty / gray market item versus region-authorized sale? If your savings is a paltry ~25%, it's probably not worth the risk. If it's at least 50% why not? Way more than 50% of Koetsu come perfect from the factory, and will never need to tap into warranty. Similar calculations with used Koetsu. Make the best choice for your personal risk appetite.

The distributor x dealer markups with Koetsu multiply out fast so that leaves a lot of room for gray market "bargains", and that's why this topic keeps coming up. 

In Tokyo, my Urushi  cost about 40% of the then current US price, with warranty and all. So I was happy to consign a profit to the dealer who sold it to me. No problem.