Value is of course subjective but probably quite predictable. In pre-industrial societies meat maybe more valuable than maize, until there is a limit in meat prior to a hunting party going out etc. and then other staples are valued more highly. Meeting basic human needs;food, shelter, warmth will also be prioritised.

But what is that as societies increase beyond a certain size or collection of kinship/familial groups their is a requirement to verify value rather than trust it.