They gave you $73,600 in trade, I guess it could be worse. At least you didn't have to deal with buyers, you might have received a little more, but the effort isn't worth it, I've done it both ways in the past. That's a real crime they couldn't deduct the Roadster trade-in on the RMV-1 form. Do you think you could/would have waited until March or April, when the Watertown service center opens, and they could meet the requirements to sell in MA, if you had known about not getting the sales tax credit on the trade in?