meaning of the phrase:no hay pan que no cueste una torta...

Question

Al principio recibió con gusto la noticia (Chencha the maid was "promoted" and her one and only responsibility was to cook the meals of Mamá Elena and serve them, but...) pero en cuanto empezaron los gritos y los reprochesse dio cuenta de que no hay pan que no cueste una torta.

Answer 1

This means that, if you get something very cheap, surely you are not getting what you think, but something of much less value.