TBM-Legend,
If you can get hold of a copy of "Vengeance!", by Peter C. Smith, on page 127 he shows two photographs of the "crating" in progress at Northrop. Actually, it is clear that it was really "boxing", for which we paid $800 extra each on the British Contract aircraft.
That would translate as £200 then, or £10,000 today !
In 1939 you could get a decent new three-bedroom semi (oop North!) for £399, and a new 8 hp. Ford Anglia would run you £115.
Danny.