Smart buying buying a preamp with tubes anot avail except as made by preamp manuf?


Why would a preamp manuf design preamp where he is only person making the tubes?

stay away?

emergingsoul

Op, if you are interested in some informed comments state particulars so everyone knows what manufacturer, what preamp , what tubes etc. 

It might be amazing. With spares, it could last a lifetime. Small signal tubes (can) last a long time.

My luck. I buy one with a spare tube. Then someone else buys all the rest, all 15 units.. all 30 tubes.. Sounds like a nightmare. to me.. Next thing we read about "what a nice guy he WAS". 

Regards

Tubes if found are $300 per.  No inventory anywhere.
what if manuf discontinues making special tubes in a few years.  Resale value of preamp is low.