I don’t use KT90,99,120,150 or 170.
I haven’t had any issues finding valves. The last quad of GL KT88 was in December of 2021. I paid 220.00 for a 5% match vs 10%. The last I looked they were 400.00 + for 10% 800.00 for 5%.
Upscale might say 20% on some valves, ask about popular/expensive quads like Golden Lyon, Ruby, PSVANE, ANY NOS US, British, Holland, German or French Valve. 100% is more like it.
The rest are Russian or Chinese for the most part.
I love it when the same tubes have been for sale on EBay for 10 years. Mcintosh set of Russian or Chinese tubes for 2-3,000.00 dollars. They actually cost about 150.00 to buy separate without the box in 2020. I think the BOX was more expensive.
India has a production plant or two. I understand Turkey might get into the tube business. Italy has always had limited production. Belgium and Ireland both have inviting work forces and better spirits, from my understanding.
My hats off to Ukraine, now head for Moscow, while it’s still spring. When a country lets a murderer run their country and he threatens to NUKE people, he has to go. The Russians need to do the right thing. Poison the guy. I hope they have to bury him in a 1 foot thick lead box. Man they sure come up with some doozies in Russia. Steven Seagal, is he nuts?