Hm.
Leveling a stem to a banded square shank is an absolute PITA to do right, and I'd be surprised if Peterson themselves would do it without either 1) leaving a step; or 2) pulling the band and "re-manufacturing" the shank & stem and then installing a new one.
As for "real money," with many states fighting for $15/hr, $25/hr for world-class work from a $40K shop is rather a bargain, I think.
Regarding my willingness to take on a project, there are only two qualifiers: intrinsic interest (I work on vintage and/or high grade collectables, not simply return tobacco access devices to service); and the owner of the piece being someone who understands and appreciates what they have.