Nice read. It's interesting to hear about this from the other side.
A similar situation existed for the German population (10.000 marks per person, if I recall correctly). The money was seen as a way to balance the economic loss generated by allowing a citizen, of a different ethnicity, to leave the country (borders were closed). Although it represented a good (and probably unique) opportunity for those people to leave, this policy strongly changed the ethnic makeup of the country.
I am curious if after Israel payed for their departure if they were allowed to leave Israel (for US for example), if they so choosed.