In our place, it is called "Tibud"
I think it really isn't a burial jar because the lip and the opening of the jar is too small to fit in exhumed remains of the dead specifically the skull unless it is broken or smashed.
Burial jars have bigger lips and openings that can accommodate a skull to fit in.
Some folks would buy that "Tibud" for 10k but the ceramic glazed tibud are far more expensive than ordinary fired clay jars like in the picture.