hello,  it is not clear to me, following your link, which vendors you are asking about.  but i have for a number of years bought 6n1p ev and 6p15p ev tubes from vendors in lithuania, ukraine, and russia proper and have been highly pleased.  i assume that these tubes are ussr surplus and have been steeply discounted due to the fact that the ussr has been, fortunately, out of business.  these are the tubes used in my se 84c+ and my csp2.  have amassed an amount of tubes which i believe to be a lifetime supply.  would do so again in a heartbeat.  on ebay you may check the vendor's feedback record and choose the one which has the most outstanding record and buy accordingly.  don pettit, long beach, washington

sorry,  missed that.  i stand corrected.  by buying from the folks i found that way i did get nos tubes at terrific prices.  good luck in your search, don

i do wish that i could recall the id s of the sellers that i dealt with.  not being much of a recordkeeper, sadly, i do not.  but i have found that the ones with 99.5% success or better are good sources.  as you know bulk buying reduces the price to joke levels.  bulgaria, ukraine, romania, poland, russia, and the baltic countries seem to have massive amounts of these tubes.  at one point i bought 10 tubes from a fellow and he, no joke, sent 10 extras .  when i asked why he said, "gift for you, sir!"  i got the feeling this was no scammer.  anyway, good luck, don

I have picked up some tubes from "Russian" sellers and never had a problem. In fact, on one occasion the tubes arrived late, and the guy just sent me another set, and declined my offer to pay for the ones that arrived late!!!!

shreekant