Yiddish or German Saying

My father used to have an expression in either Yiddish or German that loosely translated as: "Buy a bargain, catch a cold". Does anyone know of the original expression?

...the most ridiculous thing...

I would guess that the origin of the expression was to dissuade people from buying at a store that had discounts. Perhaps, its origins were not based on philo-Semitic feelings, since Jews were known to attract customers that are looking for a discount? Otherwise, many a customer would not go to a Jewish owned store.

The implication is that the only possible reason a consumer would shop in a 'Jewish' establishment is because they are guaranteed a lower price, otherwise no non-Jew would ever patronize such a store. It smacks of misunderstanding. And no, I am not Jewish, I just don't like stereotyping. Pushing the boundary here, no one would enter an Irish operated business for fear everybody was drunk. That of course is ridiculous, and so is foofie's rational.

My father used to have an expression in either Yiddish or German that loosely translated as: "Buy a bargain, catch a cold".
Does anyone know of the original expression?

I would guess that the origin of the expression was to dissuade people
from buying at a store that had discounts.

Perhaps, its origins were not based on philo-Semitic feelings,
since Jews were known to attract customers that are looking for a discount?
Otherwise, many a customer would not go to a Jewish owned store.

Great David, now that you have completely executed your illegal left turn,
what can you add to the discussion regarding the translation. Lets try to find that out, shall we?