I just placed and received and order from:
P.O. Box 26394
San Diego, CA 92196-0394
I orderd a complete set of spares for my AVA Ultravalve amp.
A matched Quad set of EH 6CA7's $75.00
A pair of signal tubes 6GH8A's GE $7.50
A Sovtek 5AR4 Rectifier. $17.50
Shipped USPS. Took 5 days to get from CA to North Carolina.
All tubes have test values on a sticker on each tube.
From their FAQ:
We test tubes for filament outage, shorts, emission and gas. All tubes are also measured for their mutual conductance, and the measured values are written down on the box. This is the actual conductance value, rather than some percentage value on the meter. We do test for excessive microphonics on tubes that are normally used in audio equipment. Power tubes are also tested for plate current and conductance at high plate voltages. We use several calibrated tube testers, including an FAA standard equipment.
I would do business with them again.