The Jews in that scenario didn't have to spend fortunes of gold to escape or eat because gold had suddenly lost value. They had to spend those fortunes because BRIBING PEOPLE IS EXPENSIVE. It is especially expensive when you have to do it on the spot and only have one chance to offer the bribe.
Picture the scenario, A family of Jews in Nazi Germany is trying to make it to Switzerland. They have their old Jewish ID papers with them, but purchased fake non-Jew IDs so as to be able to travel. They arrive at the last checkpoint before getting to the Swiss border. The guard takes the fathers fake ID and looks it over. Soon the father can tell by the guards body language that he has spotted the ID being fake. The father asks if everything is OK? The guard doesn't answer, the father is sure that the fakes have been spotted. The checkpoint is an open area with people coming and going. Everything he and the guard does might be under observation. The father reaches into his pocket and conceals a sizable gold coin in his hand. He takes his wife's fake ID and puts the gold coin inside of it, and hands it to the guard. Setting down the Fathers ID, the guard opens the Wife's ID and sees the coin. The guard looks at the father for a moment before palming the coin and putting it in his pocket, then hands the families IDs back and apologizes for the delay before letting them through.
Such a scenario is NOT the place where you nickel and dime. The father has no idea what the guards price is, but he has to make an offer high enough to convince even the most devoted Nazi to look the other way and do it in a way that doesn't get spotted.