DY: Thanks. I mentioned tosefes earlier but I think it was ignored. The 200 zuz point was not kefiya but rather asmachta; it’s mayseh beis din, true, but he still has to agree to it voluntarily if he wants to get married.
It’s all bedieved; lechatchila they wouldn’t get divorced at all, or if they did, it wouldn’t come to this point. Bedieved if it was done this way it might be a legit get. In any case I’m not advocating for this particular prenup; I’m just pointing out that some of the arguments against prove too much.