Thanks. Don't these induction coil things heat the bolt and not the area around the bolt (opposite what you suggest)?That is not a generic brake bleeder screw. The $43 is trivial, but the trick will be to get the old one out.
My suggestion is to get a can of PB blaster or Bulldog and apply several times over a 72 hour period.
And then use a sacrifical socket to weld onto the rounded bleeder screw.
use a inductive heating coil to heat up the area around the bolt, but not the bolt itself.
Then remove using a ratchet.