PBA: To be fair, your anger is misplaced. He used the word “Rabbis” before the whole list of names, implying that he was referring to all of them as Rabbi.
Joseph: I don’t know where you live, but 50K is pretty middle-class in NYC.
I’ll have to go over Hilchos Kesubos, but I feel like I recall that that Rama was rejected. I think most assume he is Chayav in Mezonos until the Get is given.
R’ Asher Weiss is certainly not “MO”.
And I’m not sure why all of this is even relevant. I have to think this out, but generally a person can pretty much volunteer any monetary Shibud he wants on himself. I do not see any reason why stating that “in circumstance X I will give my wife $Y” is invalid and what it has to do with the Get. It may be that he is defining “circumstance X” as “if my wife asks for a Get and I don’t give it”. But I cannot see what that has to do with a Get Meuseh. A person made a Shibud on himself. Like I said, I have to look into this more, but Al Regel Achas that’s what I would say.