But why not even things out by ignoring cost differentials between, say, letters and flats; cost differential put on the table by the USPS a decade ago?
Postal rates have gone up a lot in the last decade.
mnli hypothesis: Postal rates have gone up a lot in the last decade. premise: But why not even things out by ignoring cost differentials between, say, letters and flats; cost differential put on the table by the USPS a decade ago?