I have seen a number of posts that warn of potentially bad sellers, but I thought I would post what is shaping up to be a positive experience, because hey, can't beat being positive, right?
I purchased 6 IN4 tubes from '
Siberian-Shop' on ebay, and 2 days after my purchase, they contacted me with an apologetic letter - it seems that the advertised 6 N.O.S tubes were going to be 3 N.O.S, and 3 'slightly used'. I was given a bit of refund for the trouble, (I was actually given an option, - just the 3 N.O.S tubes with refund for 3, full refund, or the partial refund and all 6 tubes) and the tubes were sent on their way. All communication was quick and polite, and apologetic for the mishap. Looks like they should arrive relatively soon, and I will report back with the condition of the slightly used tubes.