All this talk about sales agents. Where the hell did you contact this person? Is that a big secret? You aren't doing your credibility any favors.
And I still don't understand why you are harping on the lack of balanced inputs. That's not the criteria by which high end amplifiers are judged.
Finally, the price you reference doesn't seem to be commensurate with prices on upgraded McCormack amps. I think someone tried to scam you and it sounds like you perceived it to be genuine.
Full disclosure, I own an Smc GT-24 with all the bells and whistles, including a new chasis and custom faceplate. It is a fantastic sounding amp and no, it doesn't have balanced inputs.