Data is Beautiful

Mozz is relatively easy and quick to make, and gets used in a bunch of foods that are pretty popular like pizza so lots of it gets made.

The cost of most things broadly comes down to supply and demand, if it's expensive there's either a low supply or high demand or both, if it's cheaper there's usually a high supply or low demand or both.
Some prices are artificially inflated by limiting the supply to intentionally not keep up with the demand, like with diamonds and houses. Illegal drugs are similar, there is always some demand for them and they're consumed when used. Prices are high because supplies are limited due to the legal risks. When cannabis was illegal prices were higher, but since many states legalized prices have fallen because there's just more of the stuff around