Since you're talking about Nuarl, you mean TWS earbuds, right? Yes, a lot of good TWS earbuds are kinda restricted to (Amazon) Japan. Right now there's also the new upcoming Nuarl ones, there's promo pics for it, might be releasing this December or early next year.

There's also the Audio Technica ATH-TWX9. And then the older (Panasonic) Technics EAH-AZ60. Don't forget the JVC IEMs too. Et cetera.

You can check out this thread for more expensive ($100/200+) TWS earbuds, but they still discuss cheaper budget sets there too: https://www.head-fi.org/threads/going-fully-wireless-iems-too-soon-or-are-we-there-yet.861024/page-3267.

Always buy in bulk (this is more so for ear tips and other small/light stuff but also applies to IEMs and TWS earbuds) from Amazon Japan. It's like a flat $10 for the DHL Express international shipping, usually arrives within 3-7 days. You have to make a separate account for Amazon Japan.

For products that are restricted to Japan and not easily available on Amazon Japan, there's always the shipping agents where you buy stuff that's only really marketed for Japan and then they store (and inspect/etc.) it at their warehouse and then they're the ones who'll ship it to you.

These days it takes a few months for Japanese TWS earbuds to enter the western or international Amazon markets, so just wait for now.

Check the e-earphone channel: https://www.youtube.com/watch?v=ScO9Klkk94Y and https://www.youtube.com/@e_earphone/videos. They have the latest news usually on TWS earbuds. They even had the new FiiO (this is a Chinese brand) FW5 before it was confirmed as finally releasing in China/elsewhere.