Hearing his eldest uncle ask this, Liu Bufan really didn't know how to answer. If you called it expensive, well, the things White Wolf ate were either stolen from other people or directly snatched; at any rate, not a single cent of his own money went into buying them.
If you called it cheap, goodness knows how many Earths could be bought with the amount of food this creature consumed.
In the end, he simply blurted out:
Chapter 70