Geez, some people...
This was in his USAudiomart ad where it was listed for $16,500, shipping in US was $250 (posted without malice):
"For sale are my close to mint condition Thomas Mayer custom 300B monoblock amplifiers in the tower configuration. These are about 2 years old and have lived in my smoke-free sound room since purchase.
The tower configuration has just two chassis with each units power supply built into the drive sections. Each one comes with Elrog 300B and 801A tubes and a full set of 8 rectifier tubes. The amps have taps for 4,8 and 16 ohm speakers and output 8 watts per side into 8 ohms.
These have dedicated shipping crates and each amp packed is around 110 pounds.
I am selling as I will be moving to a smaller living space and will be going to headphone only listening.
These are currently selling for $23,000 for non-VAT countries and shipping to the USA for a new pair is around $1,000. Buyer pays actual shipping costs and customs duties if outside of the USA"