The chassis cost $8,500 ($9,500 after 1932); the cost for most completed vehicles was between $13,000 and $19,000 (two of the American-bodied J's reached $25,000), at a time when the average U.S. physician earned less than $3,000 a year.
A series of minor modifications were carried out during the production life, but most of the design remained the same up until the factory closed in 1937.