If one mailer were large enough to provide that mass, or nearly provide it, that mailer, by threatening to leave the Postal Service, might be able to negotiate extremely low rates.
The mailer might be able to get rates as low as one dollar.
mnli hypothesis: The mailer might be able to get rates as low as one dollar. premise: If one mailer were large enough to provide that mass, or nearly provide it, that mailer, by threatening to leave the Postal Service, might be able to negotiate extremely low rates.