...but you could probably find a better price at Digikey or Mouser.
Good luck with that...
I just went through the DigiKey listing. Anything over
about 50 pF is pretty sparse. The Sprague-Goodman
film trimmers are obsolete and limited to 100 to 150 volts
or so, but still sometimes available if you can manage
to glue a shaft onto one. There are some Voltronics
high voltage trimmers that go up to 200 pF and a
few thousand volts that were made with a panel-mount
shaft, but they ran over $400 each, and are also
obsolete and no longer in stock.
That's why I recommended the capacitors from MFJ, as
they will sell any part that they use in their own tuners.
Or you can look at the inventory at
Surplus Sales of
Nebraska - not as cheap as a hamfest, or all sized
for a QRP tuner, but you might even find a replacement
for the original types if you want to maintain the original
circuit...