Amtrans is a Japanese vendor of various audio and other electronics. I have bought a couple of pairs of Takatski 300b from Amtrans. I have found them totally reliable and honorable. Only sometimes they are slow to answer emails from the US. (I once had a Japanese friend call Amtrans after my emails had gone unanswered; Amtrans immediately emailed me. Not sure whether the issue was a server or language depending on who was the office.) Amtrans has also been helpful in working with Takatsuki to cull a pair with a low mA as recommended by my amplifier designer.
Takatsuki has had three US distributors: Axiss, Amazon, and now Trueaudiophile. The US price has always been higher than the direct-from-Japan price: 140,000-150,000yen (the price was increased when they introduced the black bases) vs 1800USD from Amazon and now almost 2000USD from Trueaudiophile. When Takatsuki has a US vendor, Amtrans will not sell direct to the US. Not sure about other Japanese vendors, but it might be similar.
Whenever I have bought something from Amtrans, it has been shipped EMS. Delivery has been fast (less than one week - often a matter of days) with no import duty. In my experience Amtrans has always accepted PayPal; in fact, Amtrans insisted on it.
If I needed something from Japan and it was available from Amtrans, I would not hesitate.