While I haven't read the report, I will give you some radom thoughts on the issue. Any exchange or markets after a collapse will start on a local level, most likely barter at first. As things get more organized some forms of currency medium will be instituted. Certain forms and denominations of currency will become the standard. Value and price for items will depend on the availability of an item. Labor will be priced depending on the need of said skill. Just my 2 cents.