mukang ok yun pricing pero "relatively not common tubes"... napabuklat tuloy ako ng rca tube manuals hehehe
there are other exciting tubes than the kt88, el34, 12axx's.....if you know what to look for....
as for me tv tubes, like the dissimilar triodes, example 6em7, you have 1/2 as 12at7 and the other half a small 2A3 with unipotential cathode, very linear...makes for a nice spud amp....imagine just two tubes and you have a push-pull amp....or a stereo SET amp....
heater variants are no problem, power traffos can be ordered from edrel sison, or if you wish, made to order at raon...