I think the "audiophiles" are driving much of the market on NOS tubes these days. You know, those guys who need the best matched dual mono amps with the best tubes to listen to their MP3 collections.
I kid that interned a few years ago where I work had a good 'scam' going. He and some friends made iPhone/iPod to RCA adapters with oversized cryogenically treated wire. They spent about $6 on each of them and sold them on the web at a price point of around $400. They made no claims, just gave wire details and set the price where "audiophiles" would assume they must be really good. People started buying and leaving glowing testimonials in the reviews.
Now we have to compete with those guys for tubes....
Life is suffering; the cause of suffering is desire. Envy is a deadly sin. Save your soul, go ahead and buy another one....