Current Marketplace for Vacuum Tubes?

Hi tvad. Nice to hear from you. Hope all is well.

If desired value cannot be realized right here on agon, where those willing to pay a premium for quality tend to lurk, then I would think ebay is best bet for getting a fair market value. I’ve always found ebay works pretty well that way. But you may have to start with a low bid price that draws attention initially. Its a bit unnerving at first but I’ve found in the end it tends to draw enough attention to help assure a fair price is achieved in the end if all else is in order.

Try it one piece at a time initially with those items you are most comfortable parting with on an open auction no matter what and take it one step at a time until you see how things are panning out.

Yes no doubt tubes are unique to sell in that the difference between a great tube worth a lot and an average or poor one worth not much in terms of noise and wear, performance etc. can be hard to discern and bank on in advance, so trust is more important than ever IMHO. Money back satisfaction guarantees are probably of value to achieve best possible sale price.

I currently only trust tubes from ARC for my ARC pre-amp enough to justify paying a higher price than I might elsewhere. Especially when it comes to noise levels for use in prime slot in the phono section. That’s one of six tubes. The other 5 slots are way more forgiving. So no doubt "certifiable" high performance tubes in good condition when needed can carry a premium but most are more commodity items still to many.