Your cable looks really nice. I am tempting on getting one too. But they only have silver cable on amazon. I google a bit and found this website. Looks like they purchase items in Japan for customers and charge a bit of an agent fee plus shipping. It works out to be JPY16280 for your cable with shipping and agent charge. Converting the difference to usd thats about $15. It's actually pretty good. I might get one from them. How's the cable though, do you like it?
https://www.worldshopping.global/en/detail/2503559
I used to go with Tenso forwarding service in Japan, though I'm not sure about their rate right now. You can check it out here https://www.tenso.com/en
The quote they gave you seems to be great, considering it's both shipping plus agent fee.
I really like the cable. The build quality is very good. The braid is consistent and very tightly together but at the same time feels super soft and flexible. I won't comment on the sound since it's pretty subjective. Overall, this is a high quality cable that is durable and light with great flexibility. Most importantly it looks amazingly beautiful