$250
These retail for $350: (https://www.irishflutestore.com/product ... walt-sweet).

I have a lovely Onyx low D by Walt Sweet, made of Delrin. It's a whistle that takes some getting used to, but it's very rewarding to play once you've settled into it. I've purchased a lot of whistles in the last few months for testing, and I'm gradually working to reduce my collection.

I play it in this video (see my time stamps in the comments): https://www.youtube.com/watch?v=Jn5NtmEASC8&t=985s

_________________
Nathaniel James Dowell

Check out my various whistle comparisons on my YouTube channel:
https://www.youtube.com/playlist?list=PLyujhpemdQEcjOVM20DGKTX2PKWz4b8Yo

Or like my author page on Facebook: https://www.facebook.com/NathanielDowellPhotography/