That's an interesting question. The sacred bulls probably not. But in the ancient times people exchanged goods. And the one with the highest "intrinsic value" (a strong, young bull or a highly fertile cow) was "expensive" in terms of what you could receive for selling it.
Money in the form of metal coins were only used very late from the 30th dynasty, around 380–343 B.C.
That's an interesting question. The sacred bulls probably not. But in the ancient times people exchanged goods. And the one with the highest "intrinsic value" (a strong, young bull or a highly fertile cow) was "expensive" in terms of what you could receive for selling it.
Money in the form of metal coins were only used very late from the 30th dynasty, around 380–343 B.C.