What's the deal with Canary and why have these amps been FS for so long?

I was the under the impression that Canary was an excellent boutique brand.
I've also been considering 300b amps for some time now.
These Canary 300b amps seem like they aren't grossly over priced, yet they have been FS for 2 and 3 years each according to my hifishark searching.

As I'm looking for a tube amp in this wattage range, should I be considering these?

I guess I'm just surprised they have been FS for so long.

fs 3 years
https://www.usaudiomart.com/details/649623875-canary-audio-330-mkii-300b-monoblocks/

fs 2 years
https://www.usaudiomart.com/details/649415725-canary-audio-ca300-singleended-mono-blocks/

flavo06-16-2020 9:35pm

lwin Details Discussions Posts This discussion Message User 568 posts 06-16-2020 at 11:48pm Copy Comment URL Report Comment Edit Delete Canary makes very well built and good sounding gear but for some reason they don’t get much attention.
tooblue Details Discussions Posts This discussion Message User 1,889 posts 06-17-2020 at 12:23am Copy Comment URL Report Comment Edit Delete I wanted to say inquiry not injury in my previous post.
polk432 Details Discussions Posts This discussion Message User 1,142 posts 06-18-2020 at 02:43pm Copy Comment URL Report Comment Edit Delete I've owned lots of amps ss and tube. I have the Canary M350's with 300b and 6sn7 tubes. You can't go wrong with these mono blocks. Running a pair of Legacy Whispers (without the built in amps. Also ran Wilson Witt series II, and Lipinski L707''s. Cary Slp 98 Pre. Excellent sound with every combination.