I have 5 of his trailer train 85' flat cars in the Tuscan scheme. Since Atlas O came out with their 89' in Trailer Train tuscan, I figure Adirondack car custom work had it's values dropped significantly. NO different than the works from Barney Stumple who supplies the ATSF layout in Chicago with more modern equipment until its demise.
Note above article from now defunct 48'ft O scale news magazine.
NOte Gunderson double stack car made by BArney Stumple. Taken at the August 2016 Strasburg O scale Show.