Imps, Pouches, and Secret Recipe reward list

I think you meant fullness went up by 20 and closeness went up by 1.

If that's the case, then my new assumption is a level difference of 100, meaning

level 200, have to use stuff level 100+

level 152, have to use stuff level 52+

Um, pretty sure he meant what he said.

From my experience, items that are of lower level in relation to my character give less fullness.