Look at the Bowser ad on page 39 in the November issue of MR. The price for the GM AeroTrain is quoted as $83.95 for the GM demonstrator road name, and $93.95 for PRR, NYC, Rock Island and UP. Since the only difference in the paint job is the lettering for the various roadnames I doubt if that is the reason for the $10 difference in price. You draw your own conclusions; I know what I think, but I don't want to be accused of libel.
Walt