Is it me being short-sighted or there is no way to modify the player inventory via script? The existing inventory methods allow to query for the item(s) in a slot or for the list of items in a section; the only altering method does totally wipe the inventory out, which is a rather drastic modification!
Having scriptable ways to remove / add / replace item(s) in a slot would be rather useful to implement pieces of an economy.
I know LUA will be superseded. Still, in the meantime...